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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 »
The most common way to add CSS, is to keep the styles in external CSS files. However, in this tutorial we will use inline and internal styles, because this is easier to demonstrate, and easier for you to try it yourself.
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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.
CSS Syntax. A CSS rule consists of a selector and a declaration block: The selector points to the HTML element to style (h1). The declaration block (in curly braces) contains one or more declarations separated by semicolons. Each declaration includes a CSS property name and a value, separated by a colon.
Explore and practice CSS coding with the W3Schools Tryit Editor, an online tool for interactive learning and website creation.
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML and more.
Double Borders. Notice that the table in the examples above have double borders. This is because both the table and the <th> and <td> elements have separate borders. To remove double borders, take a look at the example below.
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.
