What is CSS? What Opens a CSS? File Format List from WhatIs.com

File Extension

CSS File Format

Cascading Style Sheet (MIME)

css file format

CSS is a plain text file format used for formatting content on web pages. CSS stands for Cascading Style Sheet and is used by web pages to help keep information in the proper display format. CSS files can help define font, size, color, spacing, border and location of HTML information on a web page, and can also be used to create a continuous look throughout multiple pages of a website.

CSS files aid website programmers by allowing a single file which contains all display settings, as well as simplifying HTML by allowing for multiple page layout design. CSS files can be opened and edited with programs such as Novell Extend Director.

MIME: text/css, application/css-stylesheet

Learn more about .CSS files:

Read more about .CSS files on Wikipedia.

Search for .CSS-related questions on IT Knowledge Exchange.

This was last updated in July 2010
Editorial Director Margaret Rouse

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