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Resources for Developers,
by Developers__

Documenting web technologies, including CSS, HTML, and JavaScript, since 2005.

Featured articles

Developer essentials: JavaScript console methods

The JavaScript console is an essential tool for web development. Learn new and fun ways to use the console to display data and debug your code.

Introduction to web sustainbility

What can web designers and developers do to build a more sustainable web? This post explores the environmental impacts of web technologies and looks at some of the ways we can build greener websites.

CSS Custom Highlight API

The CSS Custom Highlight API provides a mechanism for styling arbitrary text ranges on a document by using JavaScript to create the ranges, and CSS to style them.

The <color> CSS data type represents a color. A <color> may also include an alpha-channel transparency value, indicating how the color should composite with its background.

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