Generated content was first introduced in the CSS2 specification. For several years, the feature was used by relatively few Web authors due to inconsistent browser support. With the release of Internet Explorer 8 in 2009, generated content was rediscovered, and many interesting implementations were adopted for the first time. In this article, we’ll discuss some possible uses of generated content.
Further Reading on SmashingMag: An Ultimate Guide To CSS Pseudo-Classes And Pseudo-Elements Learning To Use The :before And :after Pseudo-Elements In CSS !