Chances are, if you've spent any time coding, you've come across CSS. But what is CSS, exactly? In short, CSS (Cascading Style Sheets) is a language that determines the style of a web document. This ...

Understanding how browsers parse CSS and render websites is an important first step towards writing more efficient code. In this first piece on efficient CSS, we look at selectors, how the browser ...

If a CSS rule doesn’t seem to work when it looks like it should and your code appears to be written correctly, or perhaps an element you’re trying to style won’t apply in any browser, your CSS rules ...

An often-overlooked website performance bottleneck occurs in processing cascading style sheets and the subsequent application of CSS selectors across a webpage's document object model. To speed up how ...