CSS2.1 Test Suite

Syntax and basic data types (455 tests)

Test Refs Flags Info
+ 4 Syntax and basic data types
counters-001 Parsing counter functions with just the identifier
  • Counters can be referred to using only the identifier.
counters-002 Invalid Parsing invalid counter functions - Too many arguments
  • A counter is invalid if it has too many arguments.
ident-014 Selector attributes and hyphens
  • Attribute selectors can begin with hyphens.
ident-015 Attribute selectors and underscores
  • Attribute selectors can begin with underscores.
ident-016 Attribute selectors with hyphens and underscores
  • Attribute selectors are valid if they begin with hyphens and then underscores.
ident-017 Invalid Attribute selection with digits
  • Attribute selectors cannot begin with digits.
ident-018 Invalid Attribute selectors starting with hyphens and digits
  • Attribute selectors cannot begin with hyphens then digits.
ident-019 Attribute selectors starting with underscore and digits
  • Attribute selectors can begin with underscore then digits.
+ 4.1 Syntax
+ 4.1.1 Tokenization
attribute-token-selector-002 [attr~=""]Attribute Selectors with Empty String Values
  • [attr~=''] is valid but matches nothing.
core-syntax-009 Syntactic White Space
  • Only the characters U+0020, U+0009, U+000A, U+000D, and U+000C are considered white space.
list-style-020 'list-style' shorthand and 'none' values
table-caption-margins-001 Table Caption Margin Collapsing
  • The table caption's margins do not collapse with the margins applied to the outer table box.
uri-013 = Invalid handling of invalid url() functions
whitespace-001 White space - em-space (U+2003)
  • Em-space is not treated as white space.
whitespace-002 White space - ideographic space (U+3000)
  • Ideographic space is not treated as white space.
+ 4.1.2 Keywords
keywords-000 Keywords v. Strings (background)
keywords-001 Keywords v. Strings (width)
quoted-keywords-001 Invalid Parsing single quoted property keywords
  • Rules with property keywords which are surrounded by single quotes are ignored.
quoted-keywords-002 Invalid Parsing double quoted value keywords
  • Rules with value keywords which are surrounded by double quotes are ignored.
+ 4.1.2.1 Vendor-specific extensions
+ 4.1.2.2 Informative Historical Notes
+ 4.1.3 Characters and case
case-sensitive-000 Case-sensitivity of Properties and Keywords (background)
case-sensitive-001 Case-sensitivity of At-rules (@media)
case-sensitive-003 Case-sensitivity of pseudo-classes and pseudo-elements
  • Pseudo-class and pseudo-element names are ASCII case-insensitive.
case-sensitive-004 Case-sensitivity of :lang() arguments
  • The argument to :lang() is ASCII case-insensitive.
case-sensitive-005 Case-sensitivity of counter names
  • Counter names are case-sensitive.
case-sensitive-007 Case sensitivity with element selectors
  • Element selectors are case-sensitive in XHTML and XML.
case-sensitive-008 Case sensitive attributes
  • CSS style sheets parts that are not under the control of CSS are case dependant on the language being used.
escaped-ident-001 Parsing escaped identifiers as selectors, property and value
  • Escaped identifiers are parsed and applied.
escaped-ident-002 Parsing escaped special CSS characters
  • Escaped special CSS characters are no longer meaningful.
escaped-ident-003 Invalid Parsing escaped newlines within identifiers
  • Newlines cannot be escaped within identifiers.
escaped-ident-004 Parsing escaped chars in the range of 0-9a-f
  • The {unicode} chars are not treated like {escape} chars.
escaped-ident-char-001 Parsing escaped characters as selector and property
  • Escaped characters are treated as normal characters.
escaped-ident-spaces-001 Parsing escaped identifiers with spaces
  • Escaped identifiers are parsed and spaces between them are ignored.
escaped-ident-spaces-002 Termination of escaped character sequences with white space
  • Escaped character sequences are terminated by white space.
escaped-ident-spaces-003 Termination of escaped character sequences with six digits
  • Escaped character sequences are terminated by exactly six hex digits.
escaped-ident-spaces-004 Termination of escaped character sequences with six digits and white space
  • Escaped character sequences are terminated by exactly six hex digits and white space.
escaped-ident-spaces-005 Termination of escaped character sequences with less than 6 digits and white space
  • Escaped character sequences are terminated by white space.
escaped-ident-spaces-006 Termination of escaped character sequences with two digits terminated by white space
  • Escaped character sequences (two hex digits) are terminated by white space.
escaped-ident-spaces-007 Termination of escaped character sequences with less than six digits terminated by linefeeds and tabs
  • Escaped character sequences (less than six hex digits) are terminated by white space, tabs and linefeeds.
escapes-000 Escaped Newline in String
escapes-001 Escaped Quote Marks in String
escapes-002 Invalid Punctuation Escapes
escapes-003 Class and Keyword Letter Escapes
escapes-004 Unicode Escapes
escapes-005 Unicode Escapes and Case Insensitivity
escapes-006 Incorrect Letter Escape (Class Selector)
escapes-007 Space-terminated Unicode Escapes
escapes-008 Invalid Invalid Space-terminated Character Escapes
escapes-009 Invalid Characters and case: Escaping a character inside a keyword
  • Browsers should be able to ignore the keyword
escapes-010 Invalid Unicode-escaped Braces
  • Unicode escapes cannot substitute for '{' or '}' in CSS syntax.
escapes-012 CSS Parsing: Escaped keywords
font-family-valid-characters-001 Ahem Valid characters in font-family values
  • Valid characters in font family names.
ident-000 Valid Identifiers (a-z) as Classes and IDs
ident-001 Valid Identifiers (-_a-zA-Z0-9) as Classes and IDs
ident-002 Valid Identifiers (starting with _) as Classes and IDs
ident-003 Invalid Valid Identifiers (starting with -) as Classes and IDs
ident-004 Valid Identifiers (starting with ideographic) as Classes and IDs
ident-005 Valid Identifiers (including ideographic) as Classes and IDs
ident-006 Valid Identifiers (starting with escape) as Classes and IDs
ident-007 Valid Identifiers (including escape) as Classes and IDs
ident-008 Invalid Invalid Identifiers (starting with digit) as Classes and IDs
ident-009 Valid Identifiers (including digits) as Classes and IDs
ident-010 Valid Identifiers (starting with escape) as Classes and IDs
ident-011 Valid Identifiers (including escapes) as Classes and IDs
ident-012 Valid Identifiers (starting with escaped digits, control codes) as Classes and IDs
ident-013 Valid Identifiers (starting with escaped -) as Classes and IDs
ident-020 Invalid Identifiers (starting with double -) as Classes and IDs
+ 4.1.4 Statements
+ 4.1.5 At-rules
at-import-009 Invalid @import following a known but invalid @rule
  • @import is respected after known but ignored @rule.
at-import-010 Invalid @import following an invalid selector
  • @import is respected after invalid (ignored) rule set
at-import-011 Invalid @import following garbage
  • @import is parsed as part of invalid ruleset after garbage.
at-keywords-000 At-rules
at-keywords-001 At-rules
at-keywords-002 Invalid At-rules
at-rules-000 Invalid At-rules
at-rules-001 At-rules
at-rules-002 At-rules
at-rules-003 At-rules
at-rules-004 At-rules
background-intrinsic-001 = SVG Background Intrinsic Sizes: No intrinsic size
  • A background image with no intrinsic size covers the entire padding box.
background-intrinsic-002 = SVG Background Intrinsic Sizes: Intrinsic Width
  • A background image with only an intrinsic width covers its intrinsic width and the height of the padding box.
background-intrinsic-003 = SVG Background Intrinsic Sizes: Intrinsic Height
  • A background image with only an intrinsic height covers its intrinsic height and the width of the padding box.
background-intrinsic-004 = SVG Background Intrinsic Sizes: Intrinsic Ratio (Match Heights)
  • A background image with only an intrinsic ratio covers largest rectangle at that ratio that exceeds neither the height nor width of the background positioning area.
background-intrinsic-005 = SVG Background Intrinsic Sizes: Intrinsic Ratio (Match Widths)
  • A background image with only an intrinsic ratio covers largest rectangle at that ratio that exceeds neither the height nor width of the background positioning area.
background-intrinsic-006 = SVG Background Intrinsic Sizes: Intrinsic Percentage Width and Height
  • A background image with only an intrinsic ratio covers largest rectangle at that ratio that exceeds neither the height nor width of the background positioning area.
background-intrinsic-007 = SVG Background Intrinsic Sizes: Intrinsic Width and Ratio
  • A missing background image height is calculated from the width and the ratio.
background-intrinsic-008 = SVG Background Intrinsic Sizes: Intrinsic Height and Ratio
  • A missing background image width is calculated from the height and the ratio.
background-intrinsic-009 = SVG Background Intrinsic Sizes: Intrinsic Width and Height (Vector)
  • A background with an intrinsic width and height is drawn at that size.
import-000 At-rules
import-001 At-rules
+ 4.1.6 Blocks
blocks-001 Invalid Parsing nested blocks and strings in style blocks
  • Blocks and strings are parsed with matching terminating pairs.
blocks-002 Empty declaration block
  • Declaration blocks that are empty have no effect on later declarations.
blocks-004 Invalid Parsing square bracket blocks
  • Blocks and strings are parsed with matching terminating pairs of square brackets.
blocks-005 Invalid Parsing curly bracket blocks
  • Blocks and strings are parsed with matching terminating pairs of curly brackets.
blocks-006 Invalid Parsing parentheses blocks
  • Blocks and strings are parsed with matching terminating pairs of parentheses.
blocks-and-strings-001 Invalid Parsing blocks and strings in style blocks
  • Nested blocks and strings are parsed accordingly.
+ 4.1.7 Rule sets, declaration blocks, and selectors
bad-selector-001 Invalid Parsing of bad selectors
  • Declarations with bad selectors are ignored.
cursor-022 InteractInvalid cursor - set to an invalid value
  • The property 'cursor', when set to an invalid value or an illegal value, must be ignored. Then, instead, the cursor to display should be based on the current context.
escapes-011 CSS Parsing: Escaped keywords
escapes-013 Escaping and spaces with classes
escapes-014 Escaping and spaces with declarations
font-family-008 AhemInvalid font-family
  • Unquoted font-family names must not contain unescaped parentheses or unescaped curly braces
+ 4.1.8 Declarations and properties
declaration-whitespace-001 Parsing white space in style declaration
  • Various white space are allowed anywhere within the declaration and are ignored.
ignored-rules-001 Invalid Parsing invalid rules that precede good rules
  • Bad rules are ignored while following good rules are applied.
ignored-rules-002 Invalid Parsing invalid rules that follow good rules
  • Good rules are applied while following bad rules are ignored.
ignored-rules-003 Invalid Parsing invalid values
  • Invalid values are ignored while valid properties are applied.
ignored-rules-004 Invalid Parsing invalid values with spaces
  • Invalid values with spaces are ignored while valid properties are applied.
ignored-rules-005 Invalid Parsing invalid values that start with a valid value name
  • Invalid values that begin with a valid keyword are ignored while valid properties are applied.
ignored-rules-006 Invalid Parsing invalid values with slashes
  • Invalid values with slashes are ignored while valid properties are applied.
ignored-rules-007 Invalid Parsing invalid values that are functions
  • Invalid values that are functions are ignored while valid properties are applied.
+ 4.1.9 Comments
c11-import-000 Basic Containment
c17-comments-000 Comments
c17-comments-001 Comments
comments-001 Parsing comments within style tag
  • Comments are allowed anywhere within a style tag declaration and are ignored.
comments-002 Invalid Nested comments
  • Comments cannot be nested.
comments-003 Invalid HTML comments and CSS comments
  • SGML comment delimiters do not delimit CSS comments.
comments-004 Invalid Parsing of invalid comments
  • Comments that are invalid are ignored.
comments-005 Invalid Parsing of escaped "/" within a valid comment
  • A slash '/' escaped with a backslash will remove its special meaning.
comments-006 Invalid Parsing of escaped "*" within a valid comment
  • A star '*' escaped with a backslash will not remove its special meaning.
comments-007 Invalid Parsing of valid comment that is empty
  • Empty comments do not affect parsing of rule.
comments-008 Invalid Parsing of escaped opening comment
  • Escaping a slash '/' for an opening comment makes the comment invalid.
comments-009 Invalid Parsing of invalid escaped "*" in open comment
  • Escaping a star '*' for an opening comment makes the comment invalid.
sgml-comments-000 SGML comments
  • UAs must ignore SGML comment delimiters between statements.
sgml-comments-001 Parsing SGML comments
  • SGML comment tokens are parsed and ignored.
sgml-comments-002 Parsing of CDO/CDC in stylesheets
+ 4.2 Rules for handling parsing errors
at-rule-001 Invalid Parser error handling with invalid at-rules: @ invalid selector
  • At-Rules start with an at-keyword (@ followed immediately by an identifier).
at-rule-002 Invalid Parsing of invalid @rules
  • An at-rule consists of everything up to and including the next semi-colon or the next block.
at-rule-003 Invalid Parsing of invalid @rules with blocks
  • An at-rule consists of everything up to and including the next semi-colon or the next block.
at-rule-004 Invalid @import inside block
  • @import is ignored if inside a block.
at-rule-005 Invalid @import following @charset
  • @import is ignored if inside a block or after any valid statement except @charset.
at-rule-006 Invalid @import following valid statements
  • @import is ignored if after any valid statement except @charset.
at-rule-007 Invalid @import following an invalid statement
  • @import is ignored if inside a block or after any valid statement except @charset.
at-rule-008 Invalid @import following a bad @rule
  • @import is ignored after invalid @rule.
at-rule-009 Invalid @import after a bad selector and rule block
  • @import is not ignored if after bad selector.
at-rule-010 @rules and white space
  • White space does not affect the validity of @rules.
at-rule-011 Invalid Parser error handling with invalid at-rules: @ invalid selector with a number
  • At-Rules are ignored if they start with an at-keyword (@ followed immediately by an identifier).
at-rule-012 Invalid Parser error handling with invalid at-rules: @ invalid selector with a hyphen
  • At-Rules are ignored it they start with an at-keyword (@ followed immediately by an identifier).
at-rule-013 Invalid Ignoring at-rules inside @media blocks
  • At-rules inside @media blocks are ignored up to up to the end of the block that contains the invalid at-keyword, or up to and including the next semicolon (;) or up to and including the next block ({...}), whichever comes first.
background-image-005 Parsing 'background-image'
blocks-003 Rule blocks and white space
  • White space around rule blocks do not affect the validity of the rule block.
c71-fwd-parsing-000 Invalid Forward-Compatible Parsing
c71-fwd-parsing-001 Invalid Forward-Compatible Parsing
c71-fwd-parsing-002 Invalid Forward-Compatible Parsing
c71-fwd-parsing-003 Invalid Forward-Compatible Parsing
c71-fwd-parsing-004 Invalid Forward-Compatible Parsing
core-syntax-001 Nested blocks in unexpected places
core-syntax-002 Nested blocks in unexpected places
core-syntax-003 Nested blocks in unexpected places (with no whitespace)
core-syntax-004 Nested blocks in unexpected places (with no whitespace)
core-syntax-006 Parsing invalid '!' declarations
core-syntax-007 Parsing invalid '!' declarations
core-syntax-008 Parsing invalid '!' declarations
counters-003 Parsing counter() function with no white space
  • The counter function can be parsed with no white space separating the function values.
counters-004 Parsing counters() function with no white space and two function values
  • The counters function can be parsed with no white space separating the two function values.
counters-005 Parsing counters() function with no white space and three function values
  • The counters function can be parsed with no white space separating the three function values.
counters-006 Parsing counter() function with white space
  • The counter function can be parsed with white space separating the function value.
counters-007 Parsing counter() function with white space and two function values
  • The counter function can be parsed with white space separating the two function values.
counters-008 Parsing counters() function with white space and two function values
  • The counters function can be parsed with white space separating the two function values.
counters-009 Parsing counters() function with white space and three function values
  • The counters function can be parsed with white space separating the three function values.
counters-010 Parsing counters() functions
  • To refer to a sequence of nested counters of the same name, the notation is 'counters(identifier, string)' or 'counters(identifier, string, list-style-type)'.
cursor-022 InteractInvalid cursor - set to an invalid value
  • The property 'cursor', when set to an invalid value or an illegal value, must be ignored. Then, instead, the cursor to display should be based on the current context.
declaration-001 Invalid malformed declaration missing ':', value, part 1
declaration-002 Invalid malformed declaration missing ':', value, part 2
declaration-003 Invalid malformed declaration missing value, part 1
declaration-004 Invalid malformed declaration missing value, part 2
declaration-005 Invalid malformed declaration: unexpected tokens { }, part 1
declaration-006 Invalid malformed declaration: unexpected tokens { }, part 2
declarations-009 Invalid Ignoring at-rules inside declaration blocks
  • At-rules inside declaration blocks are parsed as malformed declarations.
eof-001 Invalid Parsing unexpected end of declaration block
  • The parser implicitly terminates the block and applies the styles if the declaration block is not terminated.
eof-002 Invalid Parsing unexpected end of function
  • User agents close all open parentheses at the end of the style sheet.
eof-003 Invalid Parsing unexpected end of string
  • Close all open strings at the end of the style sheet.
eof-004 Invalid Parsing unexpected end of @media block
  • User agents close all open blocks at the end of the style sheet.
eof-005 Invalid Parsing unexpected end of @import
  • User agents close all open rules at the end of the style sheet.
eof-006 Invalid Parsing unexpected end of @import with closed quote
  • User agents close all open quotes at the end of the style sheet.
eof-007 Invalid Parsing unexpected end of shorthand rule
  • User agents close all open rules at the end of the style sheet.
font-family-invalid-characters-001 AhemInvalid Invalid characters in font-family values
  • Invalid characters in font family names invalidate entire declaration.
font-family-invalid-characters-002 AhemInvalid Invalid parenthesis and pair matching
  • Invalid characters in font family names.
font-family-invalid-characters-003 AhemInvalid Invalid curly brackets and pair matching
  • Invalid characters in font family names.
font-family-invalid-characters-004 AhemInvalid Invalid square brackets and pair matching
  • Invalid characters in font family names.
font-family-invalid-characters-005 AhemInvalid Invalid quotes and pair matching
  • Invalid characters in font family names.
font-family-invalid-characters-006 AhemInvalid Invalid single quotes and pair matching
  • Invalid characters in font family names.
invalid-at-rule-001 Invalid Parser error handling with invalid at-rules: @ invalid selector invalidates entire block
  • The entire block of an invalid at-rule is ignored.
invalid-decl-at-rule-001 Invalid Parsing invalid declarations in at-rules where valid declaration precedes an invalid rule
  • Invalid declarations at the end of at-rules are ignored while the remaining preceding valid declarations are applied.
invalid-decl-at-rule-002 Invalid Parsing invalid declarations in at-rules where valid declaration follows invalid rule
  • Invalid declarations at the beginning of at-rules are ignored while the remaining following valid declarations are applied.
malformed-decl-001 Invalid Parsing malformed rules: Property with no value and no ending semicolon
  • Malformed rules (property with no value and no ending semicolon) are ignored while valid rules are applied.
malformed-decl-002 Invalid Parsing malformed rules: Property with no value assigned
  • Malformed rules (property with no value) are ignored while valid ones are applied.
malformed-decl-003 Invalid Parsing malformed rules: No value and no semi-colon
  • Malformed rules with no value or semi-colon are ignored while valid rules are applied.
malformed-decl-004 Invalid Parsing malformed rules: No value with property
  • Malformed rules with no value are ignored while valid rules are applied.
malformed-decl-005 Invalid Parsing malformed rules: Semi-colon before property
  • Malformed rules with semi-colon before property are ignored while valid rules are applied.
malformed-decl-006 Invalid Parsing malformed rules: Valid rule after malformed rule
  • Malformed rules are ignored while valid rules are applied.
malformed-decl-007 Invalid Parsing malformed rules: Double colon separating property and value
  • Malformed rules with double colons between property and value are ignored while valid rules are applied.
malformed-decl-008 Invalid Parsing malformed rules: Missing property
  • Malformed rules with missing property names are ignored while valid rules are applied.
matching-brackets-001 Invalid Matching brackets and quotes for @rules
  • User agents must handle unexpected tokens encountered while parsing an at-rule by reading until the end of the statement, while observing the rules for matching pairs of brackets and quotes, and correctly handling escapes.
matching-brackets-002 Invalid Matching brackets and quotes for declarations
  • User agents must handle unexpected tokens encountered while parsing a declaration by reading until the end of the statement, while observing the rules for matching pairs of brackets and quotes, and correctly handling escapes.
matching-brackets-003 Invalid Matching brackets and quotes for selectors
  • User agents must handle unexpected tokens encountered while parsing a declaration by reading until the end of the statement, while observing the rules for matching pairs of brackets and quotes, and correctly handling escapes.
position-006 Parsing 'position'
selectors-parsing-001 CSS: Selector Parsing and Invalid Pseudo-Elements
unterminated-string-001 FontInvalid Error handling of unterminated strings
  • When the parser encounters an unterminated string, the parser drops everything up to the next ';'.
uri-013 = Invalid handling of invalid url() functions
uri-017 BitmapsInvalid Unclosed URI Token at EOF (in declaration)
  • User agents must close open URI constructs and style rules at the end of the style sheet.
uri-018 BitmapsInvalid Unclosed URI Token at EOF (in @import)
  • User agents must close open URI constructs and statements at the end of the style sheet.
z-index-015 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
z-index-016 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
z-index-017 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
+ 4.3 Values
+ 4.3.1 Integers and real numbers
numbers-units-001 Invalid Parsing invalid numbers - alphanumeric characters
  • An integer cannot have alphanumeric characters within it.
numbers-units-002 Parsing decimal values - decimal with multiple decimal digits
  • A number can be zero or more digits followed by a dot (.) followed by multiple digits.
numbers-units-003 Invalid Parsing invalid decimal values - alphanumeric characters within number
  • An alphanumeric character cannot be within the number value.
numbers-units-004 Parsing integer numbers with '+'
  • Integers can be preceded by '+'.
positive-integer-001 Parsing signed integers
  • Positively signed integers are treated the same as non-signed integers.
z-index-015 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
z-index-016 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
z-index-017 Invalid z-index - integer value
  • Besides 'auto' and 'inherit' keyword values, z-index property can only accept an integer value. An integer consists of one or more digits '0' to '9'.
z-index-018 z-index - negative values
  • Integers should range from -2,147,483,648 to 2,147,483,647 according to C Language Specification
z-index-019 z-index - negative values
  • Integers should range from -2,147,483,648 to 2,147,483,647 according to C Language Specification
+ 4.3.2 Lengths
background-position-001 AhemBitmaps background-position - ex unit
  • ex unit is the 'x-height' of the relevant font. 'em' and 'ex' length values when defining 'font-size' property refer to the computed font size of the parent element.
background-position-002 AhemBitmaps background-position - ex unit
  • ex unit is the 'x-height' of the relevant font. 'em' and 'ex' length values when defining 'font-size' property refer to the computed font size of the parent element.
border-width-009 CSS Parsing: Negative Border Widths
border-width-010 CSS Parsing: Negative Border Widths
c547-indent-000 Ahem text-indent
c5506-padn-t-000 Ahem padding-top
c5509-padn-l-000 AhemBitmaps padding-left
c5510-padn-000 AhemBitmaps padding
c61-ex-len-000 Ahem Length Units
c61-rel-len-000 AhemBitmaps Length Units
font-size-123 Invalid CSS Parsing: Negative Font-Size
  • If a negative length value is set into a font-size declaration, then such declaration is ignored.
margin-em-inherit-001 Bitmaps inherit applied on margin set with em
  • The 'em' unit is equal to the computed value of the 'font-size' property of the element on which it is used. When inherit keyword is used, the property takes the same computed value - a length value in this testcase - as the property for the element's parent.
numbers-units-005 Optional unit identifier after 0
  • After a zero length, the unit identifier is not necessary.
numbers-units-006 Invalid Unsupported negative values
  • If a negative length value is set on a property that does not allow negative length values, the declaration is ignored.
numbers-units-007 Ahem Em sizes
  • The 'em' unit is equal to the computed value of the 'font-size' property (default) of the element on which it is used.
numbers-units-008 Ahem Em size with font-size set to x-large
  • The 'em' unit is equal to the computed value of the 'font-size' property (x-large) of the element on which it is used.
numbers-units-009 Ahem Em size with the font-size set to px size
  • The 'em' unit is equal to the computed value of the 'font-size' property (pixels) of the element on which it is used.
numbers-units-010 Ahem Em size with font-size set to inch
  • The 'em' unit is equal to the computed value of the 'font-size' property (inches) of the element on which it is used.
numbers-units-011 Ahem Em size with font-size set to em
  • When 'em' is assigned in the value of the 'font-size' property itself, it uses the font size of the parent element.
numbers-units-012 Ahem Em size with font-size set to ex
  • The 'em' unit is equal to the computed value of the 'font-size' property (ex) of the element on which it is used.
numbers-units-013 Ahem Em size with font-size set to percentage
  • The 'em' unit is equal to the computed value of the 'font-size' property of the element on which it is used.
numbers-units-014 Ahem Em size with font-size set to 'larger'
  • The 'em' unit is equal to the computed value of the 'font-size' property after resolving the value 'larger'.
numbers-units-015 AhemRecommend Height of EX
  • In the cases where it is impossible or impractical to determine the x-height, a value of 0.5em should be used.
numbers-units-018 Specifying em/ex on the root element
  • Units 'em' and 'ex' refer to the initial value of the property when specified on the root element of a document.
numbers-units-019 Ahem First available font defines the 'ex' unit size
  • The 'ex' unit size is defined by the element's first available font.
numbers-units-020 96Ahem Root element and the 'ex' unit size
  • The 'ex' unit refers to the property's initial value when specified on the root element.
numbers-units-021 96Ahem Root element and the 'em' unit size
  • The 'em' unit refers to the property's initial value when specified on the root element.
padding-009 CSS Parsing: Negative Padding
padding-em-inherit-001 Bitmaps inherit applied on padding set with em
  • The 'em' unit is equal to the computed value of the 'font-size' property of the element on which it is used. When inherit keyword is used, the property takes the same computed value - a length value in this testcase - as the property for the element's parent.
position-absolute-percentage-inherit-001 position absolute - dimensions and position given by offset percentages and inherit
  • Absolutely positioned boxes can be dimensioned and positioned solely by setting offset 'top', 'right', 'bottom' and 'left' property values with percentage unit and then with inherit keyword. 'inherit' on a offset property makes such offset property take the same computed value as the offset property of the nearest positioned ancestor; in the case of a percentage value - like in this testcase - , the computed value is the specified percentage value of such nearest positioned ancestor.
units-001 Units: Equivalence
units-002 Units: ex
units-003 Units: ex
units-004 Units: ex
units-005 Units: em (0.87em floats)
units-006 Units: px and font-size
units-008 Units: px and inherited font-size
units-009 Units: px and dependent font-size
+ 4.3.3 Percentages
c62-percent-000 AhemBitmaps Percentage Units
numbers-units-016 Invalid Parsing invalid percentage values - decimal value with multiple decimals
  • Percentage assignments with more than one decimal are invalid.
numbers-units-017 Parsing of percentage values - 0%
  • Percentage of 0% is valid and calculates to 0.
+ 4.3.4 URLs and URIs
c11-import-000 Basic Containment
c64-uri-000 Bitmaps URLs
uri-001 Parsing valid URIs with white space and no quotes
  • A url function is valid if it is 'url(', followed by the URI, followed by ')', even with white space between.
uri-002 Invalid Parsing URL with an invalid space
  • URL functions with invalid spaces are ignored.
uri-003 BitmapsInvalid URL with missing closing parenthesis
  • Url functions with missing closing parenthesis are ignored.
uri-004 Bitmaps URL function with URI that has escaped special chars
  • URI escapes are allowed in URL functions.
uri-005 Bitmaps URL function with escaped special chars - single quote
  • Single quote characters appearing in an unquoted URI need to be escaped with a backslash so that the resulting URI value is a URI token.
uri-006 BitmapsInvalid Invalid character (*) after URL function values
  • Special CSS characters following URL strings invalidate the entire url assignment.
uri-007 BitmapsInvalid Invalid character (&) after URL functions values
  • Invalid characters following URL strings invalidate the entire url assignment.
uri-008 BitmapsInvalid Invalid characters (alpha) before URL function values
  • Alpha characters preceding URL strings invalidate the entire url assignment.
uri-009 BitmapsInvalid Invalid character (/) before URL functions
  • A slash character preceding URL string invalidates the entire url assignment.
uri-010 BitmapsInvalid Invalid character (_) before URL functions
  • An underscore character preceding URL string invalidates the entire url assignment.
uri-011 BitmapsInvalid Invalid character (=) before URL functions
  • An equal sign character preceding URL string invalidates the entire url assignment.
uri-012 Invalid Error handling of broken url() - balancing braces
uri-014 Unquoted commas in url()
  • Unquoted commas inside url() are valid.
uri-015 Escaped url() functional notation
  • Unquoted commas inside url() are valid.
uri-016 Error handling of broken url() with open /*
  • Comments are just regular tokens inside unquoted URLs.
+ 4.3.5 Counters
content-counter-000 content: counter(c)
content-counter-001 content: counter(c, none)
content-counter-002 content: counter(c, disc)
content-counter-003 content: counter(c, circle)
content-counter-004 content: counter(c, square)
content-counter-005 content: counter(c, decimal)
content-counter-006 content: counter(c, decimal-leading-zero)
content-counter-007 content: counter(c, lower-roman)
content-counter-008 content: counter(c, upper-roman)
content-counter-009 content: counter(c, georgian)
content-counter-010 content: counter(c, armenian)
content-counter-011 content: counter(c, lower-latin)
content-counter-012 content: counter(c, lower-alpha)
content-counter-013 content: counter(c, upper-latin)
content-counter-014 content: counter(c, upper-alpha)
content-counter-015 content: counter(c, lower-greek)
content-counter-016 Invalid content: counter() error cases
content-counters-000 content: counters(c, ".")
content-counters-001 content: counters(c, ".", none)
content-counters-002 content: counters(c, ".", disc)
content-counters-003 content: counters(c, ".", circle)
content-counters-004 content: counters(c, ".", square)
content-counters-005 content: counters(c, ".", decimal)
content-counters-006 content: counters(c, ".", decimal-leading-zero)
content-counters-007 content: counters(c, ".", lower-roman)
content-counters-008 content: counters(c, ".", upper-roman)
content-counters-009 content: counters(c, ".", georgian)
content-counters-010 content: counters(c, ".", armenian)
content-counters-011 content: counters(c, ".", lower-latin)
content-counters-012 content: counters(c, ".", lower-alpha)
content-counters-013 content: counters(c, ".", upper-latin)
content-counters-014 content: counters(c, ".", upper-alpha)
content-counters-015 content: counters(c, ".", lower-greek)
content-counters-016 content: counters() string argument
content-counters-017 content: counters() string argument
content-counters-018 Invalid content: counters() error cases
counter-increment-000 DOM/JS dynamic changes to 'counter-increment'
counter-increment-001 DOM/JS dynamic changes to 'counter-increment'
counter-increment-002 DOM/JS dynamic changes to 'counter-increment'
counter-reset-000 DOM/JS dynamic changes to 'counter-increment'
counter-reset-001 DOM/JS dynamic changes to 'counter-increment'
counter-reset-002 DOM/JS dynamic changes to 'counter-increment'
counters-hidden-000 Counter properties on 'content: none' pseudo-elements
counters-hidden-001 Counter properties on 'display: none' elements
counters-hidden-002 Counter properties on 'visibility: hidden' elements
counters-multi-000 Multiple resets for same counter
counters-multi-001 Multiple increments and resets
counters-order-000 Order of 'counter-reset', 'counter-increment', and counter use, including pseudo-elements
counters-order-001 Order of counters in out-of-flow content
counters-root-000 counters on the root element
counters-scope-000 Counter scope
counters-scope-001 Counter scope and nesting on elements
counters-scope-002 Counter scope and nesting on :before
counters-scope-003 Counter scope and nesting on :after
counters-scope-004 Counter scope and nesting
counters-scope-implied-000 Implied counter scopes with no 'counter-increment' or 'counter-reset'
counters-scope-implied-001 Implied counter scopes by counter use
counters-scope-implied-002 Implied counter scopes by 'counter-increment'
+ 4.3.6 Colors
c63-color-000 AhemBitmaps Color Units
color-000 Invalid RGB color syntax error handling
colors-001 Parsing rgb color values with white space
  • White space is allowed in the color rgb declaration.
colors-002 Invalid Parsing invalid hexadecimal RGB units - white space in hexadecimal values
  • White space is not allowed in a hexadecimal color assignment.
colors-003 Invalid Parsing invalid RGB functional notation - two values
  • An RGB value is invalid if it has only two values.
colors-004 Invalid Parsing invalid RGB functional notation - Percentages and Numbers
  • An RGB value is invalid if it has both percentages and number assignments.
colors-005 Clipping of RGB color values
  • Values outside the device gamut are clipped: the red, green, and blue values are changed to fall within the range supported by the device.
colors-006 Comparing color keywords and hex values
  • Color matching of keywords and hex values.
colors-007 Invalid Color keyword syntax
+ 4.3.7 Strings
escaped-newline-001 Parsing strings with escaped newlines
  • Strings with escaped newlines are treated as a single whole string.
quoted-string-001 Parsing of single quotes inside double quotes
  • Single quotes are allowed in strings that are double quoted.
quoted-string-002 Parsing of double quotes inside single quotes
  • Double quotes are allowed in strings that are single quoted.
quoted-string-003 Parsing of escaped quotes (single within single)
  • Single quotes cannot occur inside single quotes unless escaped.
quoted-string-004 Parsing of escaped double quotes
  • Double quotes cannot occur inside double quotes unless escaped.
strings-000 Newlines in strings
+ 4.3.8 Unsupported Values
+ 4.4 CSS style sheet representation
at-charset-001 HTTP Charset over BOM
  • The HTTP charset setting overrides the Byte Order Mark in the stylesheet.
at-charset-002 HTTP Charset over @charset
  • The HTTP charset setting overrides the @charset designation in the stylesheet.
at-charset-003 HTTP charset over link charset
  • The HTTP charset setting overrides the charset designation in the link tag.
at-charset-004 HTTP charset over set referring code page (UTF-8)
  • The HTTP charset setting overrides the referring document's code page.
at-charset-005 HTTP charset over set referring code page (windows-1252)
  • The HTTP charset setting overrides the charset designation in the referring document's meta tag.
at-charset-006 HTTP charset over referring code page (not set)
  • The HTTP charset setting overrides the charset of referring document.
at-charset-007 @charset over link charset attribute
  • The @charset setting in the stylesheet overrides the charset attribute of the link element.
at-charset-008 @charset over referring document's code page (set)
  • The @charset setting in the stylesheet overrides the referring document's set code page.
at-charset-009 @charset over referring document's code page (unset)
  • The @charset setting in the stylesheet overrides the referring document's unset code page.
at-charset-010 Link charset attribute over referring document's codepage (set)
  • The stylesheet's encoding is determined by the link element's charset attribute and not the referring document's code page.
at-charset-011 Link charset attribute over referring document's codepage (not set)
  • The stylesheet's encoding is determined by the link element's charset attribute and not the referring document's code page.
at-charset-012 Stylesheet encoding via the referring document's encoding (set)
  • The stylesheet's encoding is determined by the set encoding of the referring document.
at-charset-014 Matching BOM and @charset (utf-8)
  • The encoding is correctly interpreted from the matched BOM and @charset.
at-charset-015 Matching BOM and @charset (utf-16 LE)
  • The encoding is correctly interpreted from the matched BOM and @charset.
at-charset-016 Matching BOM and @charset (utf-16 BE)
  • The encoding is correctly interpreted from the matched BOM and @charset.
at-charset-019 BOM with no @charset (utf-8)
  • The stylesheet is correctly interpreted as utf-8.
at-charset-020 BOM with no @charset (utf-16LE)
  • The stylesheet is correctly interpreted as utf-16LE.
at-charset-021 BOM with no @charset (utf-16BE)
  • The stylesheet is correctly interpreted as utf-16BE.
at-charset-024 @charset specified (windows-1252)
  • The stylesheet is correctly interpreted as windows-1252.
at-charset-025 @charset specified (Shift-JIS)
  • The stylesheet is correctly interpreted as Shift-JIS.
at-charset-026 @charset specified (ISO-8859-6)
  • The stylesheet is correctly interpreted as ISO-8859-6.
at-charset-027 @charset specified (Big5)
  • The stylesheet is correctly interpreted as Big5.
at-charset-028 @charset specified (UTF-8)
  • The stylesheet is correctly interpreted as UTF-8.
at-charset-029 @charset specified (UTF-16LE)
  • The stylesheet is correctly interpreted as UTF-16LE.
at-charset-030 @charset specified (UTF-16BE)
  • The stylesheet is correctly interpreted as UTF-16BE.
at-charset-033 Non-matching BOM (windows-1252 with UTF-8 BOM)
  • The stylesheet is thrown out due to the BOM not matching the actual encoding.
at-charset-034 Non-matching BOM (UTF-8 with UTF-16LE BOM)
  • The stylesheet is thrown out due to the BOM not matching the actual encoding.
at-charset-035 Non-matching BOM (UTF-16LE with UTF-8 BOM)
  • The stylesheet is thrown out due to the BOM not matching the actual encoding.
at-charset-036 Non-matching BOM (UTF-32BE with UTF-16LE BOM)
  • The stylesheet is thrown out due to the BOM not matching the actual encoding.
at-charset-037 Non-matching @charset (Shift-JIS with 1252 @charset)
  • The selector does not match due to the mismatched @charset.
at-charset-038 Non-matching @charset (Big5 with Shift-JIS @charset)
  • The selector does not match due to the mismatched @charset.
at-charset-039 Matching BOM and @charset (utf-8)
  • The encoding is correctly interpreted from the matched BOM and @charset.
at-charset-040 Non-matching @charset (UTF-16BE with UTF-8 @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-041 Non-matching @charset (UTF-32LE with UTF-16BE @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-042 @charset does not match BOM (UTF8 encoding and BOM with UTF-16BE @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-043 @charset does not match BOM (UTF-16LE encoding and BOM with UTF-8 @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-044 @charset does not match BOM (UTF-32BE encoding and BOM with UTF-16BE @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-045 Mismatched endianness in @charset (UTF-16LE encoding and BOM with UTF-16BE @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-046 Mismatched endianness in @charset (UTF-16BE encoding and BOM with UTF-16LE @charset)
  • The stylesheet is thrown out due to the mismatched @charset.
at-charset-047 Endianness not specified (UTF-16LE encoding with UTF-16 @charset)
  • The stylesheet is interpreted in the correct encoding.
at-charset-048 Endianness not specified (UTF-16BE encoding with UTF-16 @charset)
  • The stylesheet is interpreted in the correct encoding.
at-charset-049 @charset preceded by a newline
  • The selector does not match due to the @charset being ignored.
at-charset-050 @charset preceded by a space
  • The selector does not match due to the @charset being ignored.
at-charset-051 @charset preceded by a declaration
  • The selector does not match due to the @charset being ignored.
at-charset-052 @charset preceded by another @charset
  • The selector does not match due to the second @charset being ignored.
at-charset-053 @charset immediately followed by a declaration block
  • The declaration block is interpreted and applied correctly.
at-charset-054 @charset in uppercase
  • The selector does not match due to the @charset being ignored.
at-charset-055 @charset without quotes
  • The selector does not match due to the @charset being ignored.
at-charset-056 @charset missing a space
  • The selector does not match due to the @charset being ignored.
at-charset-057 @charset escaped numerically
  • The selector does not match due to the @charset being ignored.
at-charset-058 @charset escaped char
  • The selector does not match due to the @charset being ignored.
at-charset-059 @charset missing semi-colon
  • The selector does not match due to the @charset being ignored.
at-charset-060 @charset with bogus name
  • The selector does not match due to the @charset being ignored.
at-charset-061 @charset within style block
  • The selector does not match due to the @charset being ignored.
at-charset-071 Stylesheet encodings: ISO-8859-1
at-charset-072 Stylesheet encodings: ISO-8859-11
at-charset-073 Stylesheet encodings: ISO-8859-5
at-charset-074 Stylesheet encodings: ISO-8859-6
at-charset-075 Stylesheet encodings: ISO-8859-7
at-charset-076 Stylesheet encodings: ISO-8859-8
at-charset-077 Stylesheet encodings: KOI8-R
at-charset-quotes-001 = @charset quotes
at-charset-space-001 = @charset leading-space
at-charset-space-002 = @charset trailing-space
at-charset-utf16-be-001 = @charset utf-16-be-no-bom
at-charset-utf16-be-002 = @charset utf-16-be-bom
at-charset-utf16-be-003 = @charset utf-16-bom-be
at-charset-utf16-le-001 = @charset utf-16-le-no-bom
at-charset-utf16-le-002 = @charset utf-16-le-bom
at-charset-utf16-le-003 = @charset utf-16-bom-le
character-encoding-001 html utf8, css http iso1
  • The user agent respects the encoding of a css stylesheet declared in HTTP.
character-encoding-002 html utf8, css http iso15
  • The user agent respects the encoding of a css stylesheet declared in HTTP.
character-encoding-003 html iso1, css http utf8
  • The user agent respects the encoding of a css stylesheet declared in HTTP.
character-encoding-004 html utf8, css @charset iso1
  • The user agent respects the encoding of a css stylesheet declared in an @charset rule.
character-encoding-005 html utf8, css @charset iso15
  • The user agent respects the encoding of a css stylesheet declared in an @charset rule.
character-encoding-006 html iso1, css @charset utf8
  • The user agent respects the encoding of a css stylesheet declared in an @charset rule.
character-encoding-007 html utf8, link charset iso1
  • The user agent respects the encoding of a css stylesheet declared in a charset attribute on the HTML link.
character-encoding-008 html utf8, link charset iso15
  • The user agent respects the encoding of a css stylesheet declared in a charset attribute on the HTML link.
character-encoding-009 html iso-8859-1, link charset utf8
  • The user agent respects the encoding of a css stylesheet declared in a charset attribute on the HTML link.
character-encoding-010 html iso1
  • The user agent applies the encoding of the HTML file to a css stylesheet whose encoding is not otherwise declared.
character-encoding-011 html iso15
  • The user agent applies the encoding of the HTML file to a css stylesheet whose encoding is not otherwise declared.
character-encoding-012 html utf8
  • The user agent applies the encoding of the HTML file to a css stylesheet whose encoding is not otherwise declared.
character-encoding-013 html iso-8859-1, css bom
  • The user agent uses a UTF-8 signature without an @charset at the beginning of a css stylesheet to indicate that the encoding is UTF-8.
character-encoding-014 html iso-8859-15, css bom
  • The user agent uses a UTF-8 signature without an @charset at the beginning of a css stylesheet to indicate that the encoding is UTF-8.
character-encoding-015 html iso-8859-1, css bom and @charset utf8 (in lowercase)
  • When a stylesheet has a BOM and an @charset declaration that is for the right Unicode encoding, the stylesheet works.
character-encoding-016 html iso-8859-1, css bom and @charset utf8 (in uppercase)
  • When a stylesheet has a BOM and an @charset declaration that is for the right Unicode encoding, the stylesheet works.
character-encoding-017 html iso-8859-15, css bom and @charset iso15
  • When a stylesheet has a BOM and a @charset declaration that is not for a Unicode encoding, the stylesheet fails.
character-encoding-018 html utf-8, css @charset unknown
  • When a stylesheet has a @charset declaration with an unknown value, the stylesheet should be ignored.
character-encoding-019 no semicolon at end of charset rule
  • If a @charset declaration is missing a final semicolon, the encoding declaration will not be recognised.
character-encoding-020 extra spaces after @charset
  • If a @charset declaration has more than one space after 'charset', the encoding declaration will not be recognised.
character-encoding-021 extra spaces before colon in charset rule
  • If a @charset declaration has spaces just before the colon, the encoding declaration will not be recognised.
character-encoding-022 linebreak in middle of charset rule
  • If a @charset declaration has a line break in the middle, the encoding declaration will not be recognised.
character-encoding-023 single quotes around charset name
  • If a @charset declaration value has single, rather than double, quotes around it, the encoding declaration will not be recognised.
character-encoding-024 blank line before @charset
  • If a @charset declaration is not on the first line of the file, the encoding declaration will not be recognised.
character-encoding-025 blank spaces before @charset
  • If a @charset declaration does not start at the beginning of the first line of the file (when there is no BOM), the encoding declaration will not be recognised.
character-encoding-026 http vs. @charset
  • An HTTP encoding declaration for a stylesheet takes precedence over an @charset declaration.
character-encoding-027 http vs. charset link
  • An HTTP encoding declaration for a stylesheet takes precedence over a charset attribute link declaration.
character-encoding-028 http vs. bom
  • An HTTP encoding declaration for a stylesheet takes precedence over a UTF-8 signature.
character-encoding-029 @charset vs. link charset
  • An HTTP encoding declaration for a stylesheet takes precedence over a UTF-8 signature.
character-encoding-031 Stylesheet encodings: ISO-8859-1
character-encoding-032 Stylesheet encodings: ISO-8859-11
character-encoding-033 Stylesheet encodings: ISO-8859-5
character-encoding-034 Stylesheet encodings: ISO-8859-6
character-encoding-035 Stylesheet encodings: ISO-8859-7
character-encoding-036 Stylesheet encodings: ISO-8859-8
character-encoding-037 Stylesheet encodings: KOI8-R
character-encoding-038 Stylesheet encodings: malformed UTF-8
charset-attr-001 = @charset test-attribute
first-letter-nested-006 = :first-letter
+ 4.4.1 Referring to characters not represented in a character encoding
character-representation-001 Character representation in other encoding
  • Characters in the stylesheet that cannot be represented in the current character encoding are written as escaped references to ISO 10646 characters.