Learn CSS. 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 advanced. Start learning CSS now »

W3.CSS is a modern CSS framework developed by the W3Schools team. It's similar to Bootstrap when it comes to build responsive, mobile-friendly websites, but it is lighter, simpler, and faster, and does not rely on JavaScript or external libraries like jQuery.

What is CSS? CSS stands for Cascading Style Sheets; CSS describes how HTML elements are to be displayed on screen, paper, or in other media; CSS saves a lot of work. It can control the layout of multiple web pages all at once; External stylesheets are stored in CSS files

Customize W3.CSS. W3.CSS includes basic fonts and font sizes. You can customize W3.CSS by changing these settings:

W3.CSS Website Templates. We have created some responsive W3.CSS website templates for you to use. You are free to modify, save, share, and use them in all your projects.

With CSS, you can control the color, font, the size of text, the spacing between elements, how elements are positioned and laid out, what background images or background colors are to be used, different displays for different devices and screen sizes, and much more!

What are CSS Animations? An animation lets an element gradually change from one style to another. You can change as many CSS properties you want, as many times as you want. To use CSS animation, you must first specify some keyframes for the animation. Keyframes hold what styles the element will have at certain times.

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In this example we use the CSS transition property to animate the width of the search input when it gets focus. You will learn more about the transition property later, in our CSS Transitions chapter.

W3.CSS is a modern, responsive, mobile first CSS framework. W3.CSS provides equality for all browsers: Chrome. Firefox. Edge. IE. Safari. Opera. W3.CSS provides equality for all devices: Desktop. Laptop. Tablet. Mobile. W3.CSS is standard CSS only (No jQuery or JavaScript library).