CSS References At W3Schools you will find complete CSS references of all properties and selectors with syntax, examples, browser support, and more.

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 …

An external style sheet can be written in any text editor, and must be saved with a .css extension. The external .css file should not contain any HTML tags. Here is how the "mystyle.css" file looks:

CSS Selectors CSS selectors are used to "find" (or select) the HTML elements you want to style. We can divide CSS selectors into five categories: Simple selectors (select elements based on name, id, …

CSS Selectors CSS selectors are used to "find" (or select) the HTML elements you want to style. Use our CSS Selector Tester to demonstrate the different selectors.

CSS Borders The CSS border properties allow you to specify the style, width, and color of an element's border. I have borders on all sides. I have a red, bottom border. I have rounded borders.

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.

The var() function is used to insert the value of a CSS variable. CSS variables have access to the DOM, which means that you can create variables with local or global scope, change the variables with …

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.

CSS Editor With our online CSS editor, you can edit HTML, CSS and JavaScript code, and view the result in your browser.