.CSS File Extension

.CSS File Extension

File Type

Cascading Style Sheet

Developer N/A
4.1  |  161 Votes
Category Web Files
Format Text

What is a CSS file?

A CSS file is a cascading style sheet (CSS) file used to format the contents of a webpage. It contains customized, global properties for how to display HTML elements. CSS files can define the size, color, font, line spacing, indentation, borders, and location of HTML elements.

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Screenshot of a .css file in Adobe Dreamweaver CC 2017
CSS file open in Adobe Dreamweaver CC 2017

CSS files are used to create a similar look and feel across websites. They also are used to reduce the amount of work and HTML code generated by consolidating display properties into a single file.

CSS files are stored in a plain text format, which means you can open and edit them with any text editor. However, you should use web development programs, such as Dreamweaver and ColdFusion Builder, which provide more advanced features for editing CSS files.

Open and view .CSS files with File Viewer Plus.Free Download

Programs that open CSS files

Verified by FileInfo.com

The FileInfo.com team has independently researched the Cascading Style Sheet file format and Mac, Windows, Linux, Android, and iOS apps listed on this page. Our goal is 100% accuracy and we only publish information about file types that we have verified.

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