.CSS File Extension

File Type:
Cascading Style Sheet

Having trouble opening .css extension? Don't panic! This page explains what css files are as well as suggests programs you may use to open css files. You can download these programs through this page.

What is a CSS file?

Css file extension has Cascading Style Sheet file type, which is associated with the "web files" category.

CSS (cascading style sheet) file is mainly used when formatting the webpage contents. It provides custom properties, including color, size, font, etc., which specify how the .HTML elements have to be displayed.

CSS files allow creating different webpages with a similar look. Such files typically involve a plain text format. Users can easily edit them via a text editor. 

To learn how you can open the given file, read the information below.

css file icon
File Type:
Cascading Style Sheet
Web Files

How to open CSS file?

Double click the css file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .css extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the css extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the css file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open CSS files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the css file as well. Download Universal File Viewer for your OS.

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