CSS

css icon

Cascading Style Sheets

File type: Internet related file

A css file extension is commonly used for text files that contain Cascading Style Sheets data, which are used on websites and define graphic layout and look of webpages.

Found 2 different file type records with the same css filename suffix.

What is css file?

File type category:
Internet related file

Date updated: June 27, 2025

The css file extension is associated with Cascading Style Sheets (CSS). The css files are used to format the contents of web pages.

A css file contains customized, global properties and other information about how to display HTML elements. It can define the size, background, colors, fonts, line spacing, indentation, borders, formats and location of HTML elements.

Basically, the css files are used to create a similar look and feel across whole websites. The .css files are also used to reduce the amount of work and HTML code generated by consolidating display properties into one single file. The .css files are stored in a plain text format.

The style sheets have existed in one form or another since the beginnings of SGML in the 1970s. Cascading Style Sheets were developed as a means for creating a consistent approach to providing style information for web documents.

The Cascading Style Sheets (CSS) helps Web developers create a uniform look for several pages within a Web site. Instead of defining the style of each table and each block of text within a page's HTML, commonly used styles need to be defined only once in a CSS document.
Once the style is defined in cascading style sheet, it can be used by any page that references the .css file. What more, the CSS allows to easy change styles across several pages at once.
For example, a Web developer is able to change the default font size from 12pt to 14pt for ten pages of his Web site at once. If the pages all reference to the same style sheet, the text size only needs to be changed on the style sheet and all the pages will have their font changed.

While Cascading Style Sheets are great for creating text styles, they are really helpful for formatting other aspects of the Web page layout as well. For example, the .css file can be used to define the cell padding of table cells, the style, thickness, and color of a table's border, and the padding around images or other objects. CSS gives Web developers much more control over how their web pages will look compared what the HTML format offers. For this very reason, most internet pages today incorporate cascading style sheets.

The CSS specifications are maintained by the World Wide Web Consortium (W3C).

MIME types:
text/css is registered for use with CSS by RFC 2318.

How to open css file?

Use any suitable text editor or development suite to open or edit the .css files. You can also view the .css files with any modern internet browser.

How to convert css file?

You can convert HTML files to CSS with the use of some SEO tools available on the internet, such as TABLE2CSS.

Suggested software to open css file:

Associated software actions with the css file

Software applications that can open css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

NotePad++ text editor icon NotePad++ text editor (Microsoft Windows)

Sublime Text icon Sublime Text (Microsoft Windows)

no icon available ConTEXT (Microsoft Windows)

PSPad icon PSPad (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

no icon available VbsEdit (Microsoft Windows)

CoffeeCup HTML Editor icon CoffeeCup HTML Editor (Microsoft Windows)

no icon available Source Edit (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Sublime Text for Mac icon Sublime Text for Mac (Apple macOS / Mac OS X)

Espresso icon Espresso (Apple macOS / Mac OS X)

Adobe ColdFusion Builder for Mac icon Adobe ColdFusion Builder for Mac (Apple macOS / Mac OS X)

Sublime Text for Linux icon Sublime Text for Linux (Linux/Unix)

gedit icon gedit (Linux/Unix)

Microsoft Visual Studio icon Microsoft Visual Studio (Multiplatform)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Visual Studio Code icon Visual Studio Code (Multiplatform)

Software applications that can edit css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

NotePad++ text editor icon NotePad++ text editor (Microsoft Windows)

Sublime Text icon Sublime Text (Microsoft Windows)

no icon available ConTEXT (Microsoft Windows)

PSPad icon PSPad (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

no icon available VbsEdit (Microsoft Windows)

CoffeeCup HTML Editor icon CoffeeCup HTML Editor (Microsoft Windows)

no icon available Source Edit (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Sublime Text for Mac icon Sublime Text for Mac (Apple macOS / Mac OS X)

Espresso icon Espresso (Apple macOS / Mac OS X)

Adobe ColdFusion Builder for Mac icon Adobe ColdFusion Builder for Mac (Apple macOS / Mac OS X)

Sublime Text for Linux icon Sublime Text for Linux (Linux/Unix)

gedit icon gedit (Linux/Unix)

Microsoft Visual Studio icon Microsoft Visual Studio (Multiplatform)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Visual Studio Code icon Visual Studio Code (Multiplatform)

Software capable of saving css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

NotePad++ text editor icon NotePad++ text editor (Microsoft Windows)

Sublime Text icon Sublime Text (Microsoft Windows)

no icon available ConTEXT (Microsoft Windows)

PSPad icon PSPad (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

no icon available VbsEdit (Microsoft Windows)

CoffeeCup HTML Editor icon CoffeeCup HTML Editor (Microsoft Windows)

no icon available Source Edit (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Sublime Text for Mac icon Sublime Text for Mac (Apple macOS / Mac OS X)

Espresso icon Espresso (Apple macOS / Mac OS X)

Adobe ColdFusion Builder for Mac icon Adobe ColdFusion Builder for Mac (Apple macOS / Mac OS X)

Sublime Text for Linux icon Sublime Text for Linux (Linux/Unix)

gedit icon gedit (Linux/Unix)

Microsoft Visual Studio icon Microsoft Visual Studio (Multiplatform)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Visual Studio Code icon Visual Studio Code (Multiplatform)

Programs for viewing css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

NotePad++ text editor icon NotePad++ text editor (Microsoft Windows)

Microsoft Edge icon Microsoft Edge (Microsoft Windows)

Firefox icon Firefox (Microsoft Windows)

Opera browser icon Opera browser (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Firefox for Mac icon Firefox for Mac (Apple macOS / Mac OS X)

Safari icon Safari (Apple macOS / Mac OS X)

Opera browser for Mac icon Opera browser for Mac (Apple macOS / Mac OS X)

Google Chrome for Mac icon Google Chrome for Mac (Apple macOS / Mac OS X)

Firefox for Linux icon Firefox for Linux (Linux/Unix)

Opera browser for Linux icon Opera browser for Linux (Linux/Unix)

Microsoft Visual Studio icon Microsoft Visual Studio (Multiplatform)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Software apps that create css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

no icon available TABLE2CSS (Microsoft Windows)

no icon available ConTEXT (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

CoffeeCup HTML Editor icon CoffeeCup HTML Editor (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Adobe ColdFusion Builder for Mac icon Adobe ColdFusion Builder for Mac (Apple macOS / Mac OS X)

Microsoft Visual Studio icon Microsoft Visual Studio (Multiplatform)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Visual Studio Code icon Visual Studio Code (Multiplatform)

Software apps that convert css files:

no icon available TABLE2CSS (Microsoft Windows)

Software apps that export css files:

no icon available Compass.app (Multiplatform)

Software apps that print css files:

no icon available Rapid CSS Editor (Microsoft Windows)

no icon available Top Style For Windows (Microsoft Windows)

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

NotePad++ text editor icon NotePad++ text editor (Microsoft Windows)

no icon available Web Page Maker (Microsoft Windows)

Adobe Dreamweaver for Mac icon Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)

TextEdit icon TextEdit (Apple macOS / Mac OS X)

Nvu icon Nvu (Multiplatform)

GNU Emacs icon GNU Emacs (Multiplatform)

Software applications that handle other tasks involving css files:

Adobe Dreamweaver icon Adobe Dreamweaver (Microsoft Windows)

no icon available TABLE2CSS (Microsoft Windows)

Adobe Creative Suite icon Adobe Creative Suite (Microsoft Windows)

Safari icon Safari (Apple macOS / Mac OS X)

Adobe Creative Suite for Mac icon Adobe Creative Suite for Mac (Apple macOS / Mac OS X)

Firefox for Linux icon Firefox for Linux (Linux/Unix)

Adobe Creative Cloud icon Adobe Creative Cloud (Multiplatform)

Statistica data sheet

File type category:
Spreadsheet and workbook file

Date updated: November 18, 2018

The css file extension is used by Statistica, a software for Microsoft Windows operating system, developed by StatSoft, Inc..

The css files contains data sheets created with the Statistica program.

How to open css file?

Use Statistica to work with *.css files.

How to convert css file?

Probably can be exported to other formats.

Suggested software to open css file:

Associated software actions with the css file

Software applications that can open css files:

STATISTICA icon STATISTICA (Microsoft Windows)

Software applications that can edit css files:

STATISTICA icon STATISTICA (Microsoft Windows)

Software capable of saving css files:

STATISTICA icon STATISTICA (Microsoft Windows)

Software apps that create css files:

STATISTICA icon STATISTICA (Microsoft Windows)

Software apps that print css files:

STATISTICA icon STATISTICA (Microsoft Windows)

Software applications that handle other tasks involving css files:

STATISTICA icon STATISTICA (Microsoft Windows)