Interactive lessons and hands-on exercises covering HTML, CSS, JavaScript, React, Node.js, and developer tools. All in your browser.
Structure and semantics of web pages
Styling, layout, and responsive design
Interactivity, logic, and APIs
Deoit combines a powerful browser-based IDE with 52 interactive lessons. Structured courses cover HTML, CSS, and JavaScript — all accessible instantly with zero setup.
Master the building blocks of every website. Learn elements, attributes, forms, tables, semantic HTML5, accessibility, and SEO best practices across 25 comprehensive lessons.
Start Learning HTML →Transform plain HTML into beautiful designs. Master the box model, Flexbox, CSS Grid, responsive design with media queries, animations, variables, and modern typography in 15 lessons.
Start Learning CSS →Make your pages interactive and dynamic. Learn variables, functions, DOM manipulation, events, async/await, fetch API, classes, modules, and closures in 12 in-depth lessons.
Start Learning JavaScript →Yes! Deoit is 100% free. No signup required. You get a full code editor with HTML, CSS, and JavaScript support, plus 52 free web development lessons.
Absolutely. Deoit offers 52 structured lessons covering HTML, CSS, and JavaScript. Each lesson includes code examples you can practice directly in the browser.
Start with HTML (structure), then CSS (styling), then JavaScript (interactivity). After that, learn React for modern UIs and Node.js for backend. Don't forget Git along the way.
No. Deoit runs entirely in your browser. No downloads, no installation. Just open the editor and start coding.
52 lessons: 25 HTML, 15 CSS, and 12 JavaScript. New content is added regularly.