CSS Tutorial
Before you - the best and most complete online tutorial on CSS in English from the world's largest and most famous Internet resource for learning web technologies - the site W3Schools.com.
What is CSS?
CSS (Cascading Style Sheets) — is a style sheet language used for specifying the presentation and styling of a document written in a markup language such as HTML or XML (including XML dialects such as SVG, MathML or XHTML).
CSS is a cornerstone technology of the World Wide Web, alongside HTML and JavaScript.
CSS specifications have been created and are being developed World Wide Web Consortium - W3C.
CSS has different levels and profiles. The next level of CSS is built on top of the previous ones, adding new functionality or extending functionality that already exists. The levels are denoted as CSS1, CSS2 and CSS3. Profiles are a set of CSS rules of one or more levels, created for certain types of devices or interfaces. For example, there are CSS profiles for printers, mobile devices, etc.
CSS (cascade or block layout) replaced the tabular layout of web pages. The main advantage of block layout is the separation of page content (data) and its visual presentation (design).
As of 2024, the current version is the CSS3 specification. The CSS4 specification has been under development since 2011. CSS4 modules build on CSS3 and add new properties and values. All of them exist so far as drafts (working draft) and have not been officially approved at this time.
The official site of CSS, where you can always find up-to-date information about changes and innovations in CSS - https://www.w3.org/TR/CSS/#css.
Information from Wikipedia
CSS is:
CSS is the language we use to style an HTML document.
CSS describes how HTML elements should be displayed.
This tutorial will teach you CSS from basic to advance.
Start learning CSS now »Examples in Each Chapter
This CSS tutorial contains hundreds of CSS examples.
With our online editor, you can edit the CSS and click on a button to view the result.
CSS Example
body {
background-color: lightblue;
}
h1 {
color: white;
text-align: center;
}
p {
font-family: verdana;
font-size: 20px;
}
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CSS Examples
Learn from over 300 examples! With our editor, you can edit the CSS, and click on a button to view the result.
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CSS Templates
We have created some responsive W3.CSS templates for you to use.
You are free to modify, save, share, and use them in all your projects.
CSS Exercises
CSS Quiz
Test your CSS skills with a quiz.
CSS References
At W3Schools, you will find complete CSS references of all properties and selectors with syntax, examples, browser support, and more.
What is CSS? Why is it needed?
CSS (Cascading Style Sheets) is a style description language that plays an important role in creating beautiful and user-friendly websites.
Why is learning CSS key to being a successful web developer?
- Appearance: HTML defines textual content, while CSS defines its visual structure, layout, and aesthetics. Without CSS, websites would be less attractive and difficult for users to access. Knowledge of CSS allows us to create a beautiful design, change colors, fonts, positioning of elements and much more.
- Load Speed: CSS helps reduce code size, which improves page load speed. With a single CSS rule, you can apply styles to all occurrences of a particular tag in an HTML document.
- User Experience: Well-designed buttons, logically arranged text and user-friendly design make the website more understandable for users. CSS helps improve their website experience.
- Efficient Development: With CSS, you can apply styles to multiple pages with a single line of code. For example, if you have pages that have the same format, you can use one CSS file for all those pages. If necessary, the design of such pages can be easily changed by changing only the content of the CSS file.
