Testing Statement #3 Below of Section 5.5.8 of CSS1 Spec
3. The "padding-bottom" property sets the bottom padding of an element. Padding
values cannot be negative.
PASS CRITERIA:
If statement #3 above is passed, this paragraph should have a padding bottom
of UA-default. The rule stated is "p {padding-bottom: -5em}", but should
be ignored because the value is negative.
All other properties of this page should be UA-default.