Add the externalBlue.css style sheet to externalCSS.html by placing a link tag (" ") between the file's opening "" and closing "" tags.

Learn how cascading style sheets (CSS) work, and how they can help you properly create HTML page layouts that conform to industry best practices.

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 ...