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 ...

For National 5 Computing Science, revise how Cascading Style Sheets (CSS) are used to apply styles to a webpage (internal) or website (external).

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.

CSS style sheets allow for the same document to be viewed with different devices, ranging from color monitors to mobile phones and printers.