W3C reference (context only, see #200)
Foxglove
Difference
<text id="revision"> legend every test carries: it renders in a fallback font this
library cannot match, so it is excluded from the comparison entirely rather than failing every test.
If any red shows, the test fails. If four orange circles are shown, the test passes and the user agent supports CSS style sheets. If the top two circles are orange while the bottom two are blue, and the user agent does not claim to support CSS style sheets, the test also passes.
