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w3c / accname

Accessible Name and Description Computation
https://w3c.github.io/accname/
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Pseudo elements should be reference with a double colon, not the legacy single colon #141

Open cookiecrook opened 3 years ago

cookiecrook commented 3 years ago

CSS Generated Content (a.k.a. pseudo elements) should be referenced with a double colon (::before and ::after), not the legacy single colon.

Using a single colon for pseudo elements (:before and :after) is a legacy syntax from CSS 1 or 2. Single colons are still valid on pseudo classes (states of real DOM elements, such as :visited), but a single colon is not the recommended syntax for generated elements.