How to Get the Navigation Bar Under the Header in CSS. When you're coding a new website layout, it sometimes can be tricky to get the different elements in the exact positions you want.

HTML provides the structure, content and layout, CSS adds style and design, and JavaScript adds functionality and interactivity.

How JavaScript Works For Ecommerce Sites When building an ecommerce site, developers use HTML for content and organization, CSS for design, and JavaScript for interaction with backend servers.

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