This blockquote element has visibility inherit (initial value, no explicit CSS
rule defined)
This paragraph has visibility visible. This emphasized text has
visibility of UA-default, even though em is descendant of p (property not
inherited).
This strong text has visibility hidden
This h3 heading has visibility collapse
This h4 text has visibility inherit
This h5 heading is UA-default (percentages don't apply)
The rules applied are "p {visibility: visible}",
"strong {visibility: hidden}",
h3 {visibility: collapse}",
h4 {visibility: inherit}",
h5 {visibility: 200%}".
NOTE: From all elements listed above, visibility property should apply to all
elements.