When most people think about web development, HTML or JavaScript usually come to mind. They usually forget about the technology that has far more impact on the ability to enjoy a website: cascading style sheets (CSS). CSS is both one of the most important and the most often forgotten parts of any webpage, even though it[he]#039[/he]s one of the three cornerstone technologies of the World Wide Web, according to Wikipedia.

Source: LXer – 9 open source CSS frameworks for frontend web development