As all widely used web browsers (unless you still consider IE7 as being widely used) now support the :before and :after pseudo-elements along with the content property, using those pseduo-elements has become more and more common.

There are many clever CSS tricks they can be used for, like implementing a particular design without having to insert extra markup into your HTML. There is one catch though, and many developers seem unaware of this: several screen readers will speak content that is created this way. VoiceOver does (in both OS X and iOS). NVDA does when used with Firefox, though not with IE. I made a CSS generated content demo page so you can try it yourself.

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Copyright © Roger Johansson