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feature: pseudo elements status: use tags: none kind: css polyfillurls:

The pseudo-element notation was updated to use a double colon - :: - in the CSS3 Selectors module. The CSS module requires that browsers support both the single and double colon notations for the pseudo-elements introduced in CSS1 and CSS2 - :first-line, :first-letter, :before and :after. Therefore, if you intend to support IE8+, you should use the earlier single colon notation.

When adding generated content to your page with :before and :after, make sure that it is only for presentation and not to add content that should be included in the HTML source, as it may not be accessible.