What is .CSS file extension?
Cascading Style Sheet (CSS) file used to format the contents of a Web page; contains customized, global properties for how to display HTML elements; can define the size, color, font, line spacing, indentation, borders, and location of HTML elements.
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.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.