Cascading Style Sheets

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Cascading Style Sheets, or CSS, are a way to change the look of HTML and XHTML web pages. CSS was designed by the W3C, and is supported well by most modern web browsers. The current version of CSS is CSS 2. CSS version 3 is currently being worked on. It will introduce new properties like border-radius.

One advantage to using CSS is a web page can still be displayed and understood, even if the CSS is not working or removed.

CSS code is saved in files with the .css file extension.

Example CSS[change | change source]

To make all paragraphs on a page blue and sized 20% bigger than normal text, we would apply this CSS rule to a page:

p {
  color: blue;
  font-size: 120%;

Other websites[change | change source]