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CSS Reference


NOTE: To start tracking your progress, you need to sign up or sign in and click the TAKE COURSE button above.

Below you will find a collection of tutorials on the basics of CSS, the stylesheet language.

Before You Start

These tutorials assume you have a basic understanding of HTML.


You can download exercises to go along with these tutorials on our CSS exercises repository on GitHub. Just click the green Code button in the corner and click the Download ZIP option.

CSS Introduction

CSS Syntax

CSS Values

CSS Properties

CSS Selectors

CSS HTML Elements

Writing CSS

CSS Concepts

Intermediate CSS

CSS Building Projects

Next Steps

After taking this course, you can take our Website Testing course.