Test of Conformance Rules for CSS2 (Section 3.2)
Even though one of the three stylesheets linked to this document cannot
be received, the UA must display the document using the stylesheets that
it can retrieve. This means the line of text below should be red when
the document loads:
This is the line of text in question.
The UA must provide a mechanism for selection of alternate
stylesheets. Therefore, the user must be presented with the ability to
change the current stylesheet from "Original Stylesheet" to
"Alternate Stylesheet." When this is done, the above
paragraph will turn green. If this cannot be done, then the UA is not
in conformance with the CSS2 Recommendation.