Simple.css is classless CSS template that allows you to create a good looking website very quickly.

Color hex is a easy to use tool to get the color codes information including color models (RGB,HSL,HSV and CMYK), css and html color codes.

W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.

Learn what semantic markup is and how you can ensure that the HTML you write is semantically meaningful and accurate.

Learn how to code HTML & CSS for free at HTML.com. We've HTML tutorials & reference guides on tags, attributes and everything else you need to master HTML.

For artists and designers, bring your designs to life with our collection of online color tools and color palette inspiration.

When we truly learn the secrets of the Flexbox layout mode, we can build absolutely incredible things. Fluid layouts that stretch and shrink without arbitrary breakpoints. In this action-packed interactive tutorial, we'll pop the hood on the Flexbox algorithm and learn how to do remarkable things with it. ✨

CSS Reference is a free visual guide to CSS. It features the most popular properties, and explains them with illustrated and animated examples.

Simple, powerful, free tools to create and use millions of apps.

A series examining modern CSS solutions to problems Stephanie Eckles (@5t3ph), a seasoned frontend developer, has been solving for 15+ years.

Own Your Web is a newsletter by Matthias Ott about designing, building, creating, and publishing for and on the Web. Every other week, I send out an exclusive email full of actionable insights, best practices, hacks, links, books, tools, and other high-quality insights I found or explored. Whether you want to get started with your own personal website or level up as a designer, developer, or independent creator working with the ever-changing material of the Web, this little email is for you. ❤✊ Free. No spam ever. You can unsubscribe at any time. By signing up, you consent to my use of your email address to stay in touch with you, as provided in my Privacy Policy.

The open Web presents incredible opportunities for developers. To take full advantage of these technologies, you need to know how to use them. Below you'll find links to our Web technology documentation.