What is .CSS File Extension?
Read CSS File Format Specifications!
Developer: | World Wide Web Consortium (W3C) |
Primary association: | Hypertext Cascading Style Sheet |
Format Type: | Style Sheet |
File Category: | Web Files |
MIME Type: | text/css, application/css-stylesheet |
Supported Platforms: | Microsoft Windows, MAC OS X and Linux |
Default Location: | User defined |
What is Full form of .CSS File Extension?
CSS stands for cascading style sheet. It is a plain text file format commonly used for arranging content on web pages.
Detailed Information About CSS File Format
The .css is a file extension of cascading style sheet. It can be used with HTML, XML, ASPX and PHP etc. for designing purpose. By using the css you can control the html element, such as font, color and size etc. The CSS is mainly designed to enable the separation of document including aspects such as the layout.
There are three ways to insert a style sheet:
- External
- Internal
- Inline
External: In external cascading style sheet you can change the entire website layout by changing just a one .css file. Use link tag inside head tag to call an external style sheet.

Internal: It may be used if only a single page contains a unique style. In such type of condition you can use style tag inside head tag.

Inline: In inline style sheet you can change the property of a single HTML element. Use inline style within the tag.

How to Edit or Open CSS Document?
Programs to Open CSS File in Windows:
- Netbeans
- Adobe Dreamweaver
- All text editor
- Google Chrome
- Mozilla Firefox
- Internet Explorer
Software Can be Used to Open CSS Extension in MAC:
- Macro Mates TextMate
- Adobe Dreamweaver
- All text editor
- Google Chrome
- Mozilla Firefox
- Internet Explorer
How to Open CSS File in Linux:
- SCREEM
- Any text editor
- Google Chrome
- Mozilla Firefox
- Internet Explorer
- W3C Amaya
- All text editors