How to Tell if a Website Is Built With CSS. One of the best ways to learn to build compelling business websites is to study the code that others create. While HTML is great for placing objects on ...

Use this handy, simplified guide to quickly learn HTML and CSS -- a foundation of modern web development.

header { Code here } If it is not present, add it to the CSS file, but ensure to use the same "id" name that is used within the HTML.