But you don’t need to use it, and your sites can still look good without it. How Do CSS and HTML Work Together? If you learned about the web a long time ago, or taught yourself the basics, you may be ...

Standing for cascading style sheets, CSS files are used inside browsers to load rules for stylizing a web page's elements with the help of the CSS language.

While CSS files apply style instructions to general areas such as the background and the main document text, some CSS template files specify certain tags that may not match the tags in your document.