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 or inline. Two advantages of using external ...

CSS is a programming language that lets you customize the color, font, and layout of an HTML-coded website.

To apply a rule to multiple pages, an external style sheet is used. An external style sheet is a separate CSS file that can be accessed by creating a link within the head section of the webpage.