CSS has many different benefits for website owners. The most obvious is the pure, raw design capabilities CSS brings to websites. CSS can control everything from the size of your font to the very layout of your page. A site designed with proper HTML and CSS can avoid incorporating almost any design elements into the actual HTML. This means a website owner can change the entire look of their whole site without changing a single HTML page. For owners of sites with dynamic content or sites that have a lot of content (blogs, forums, stores, etc), this becomes a huge time saver.