CSS stands for Cascading Style Sheets.

CSS is another critical part of Websites. The CSS language allows a developer to create styling rules which dictate how a Web page looks. The CSS rules are used to style the HTML that makes up every single Web page on the Internet.

Web browsers can interpret the CSS and apply the appropriate styling to present the Web page as designed to users. It is one of the core underpinning languages of any website alongside HTML and Javascript.