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 ...

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

Header code here Navigation bar code here Load the style sheet containing your CSS code. If you do not use separate style sheets, the CSS will be located between the tags at the top of your HTML file.

Back in 2012, Mozilla launched Thimble, an online code editor for teaching the basics of HTML, CSS and JavaScript. Over time, though, things got pretty quiet around the project as other browser ...