How to Add a Hyperlink to External CSS. Cascading style sheets (CSS) are browser instructions for styling HTML elements that can be added to Web pages in one of three ways: externally, internally ...

In other words, we use HTML to define the structure and the meaning of a page, while we use CSS to specify its visual style. CSS works in combination with HTML.

Create a section for your CSS style sheet in the header of your HTML page. Link to an external CSS style sheet as an alternative for larger stylesheets.