AI HTML & CSS assistant in your browser

HTML & CSS is used for web layouts, components and responsive design. Chat with all AI's Code assistant explains, debugs, reviews and writes HTML & CSS with the model you choose — right next to the docs or the pull request you're reading.

Updated November 13, 20262 min read

What it helps with in HTML & CSS

Flexbox and Grid
Responsive layouts
Accessibility fixes
CSS variables and theming
Explaining errors and stack traces
Reviews before you open a pull request

Try this

Center this card and make the layout responsive without media-query hacks.

Workflow

Choose Code on the home screen.
Pick a task and set the language to HTML & CSS.
Paste code, or select it on the page and right-click → Explain this code.
Compare answers from two models for tricky problems.

Tasks you can run

Explain code · Debug code · Write code · Code review · Convert code · Optimize code · Generate unit tests · Regex generator · SQL query generator · Code documentation

Frequently asked questions

Is this a HTML & CSS AI assistant?

Yes. Choose HTML & CSS in the Code assistant's language menu, or let Auto detect it.

Which AI model is best for HTML & CSS?

Claude Opus 5.5, GPT-6.1 Sol and Muse Wonder for complex work; Claude Sonnet 5.5 and GPT-6.1 Terra for quick everyday help.

Can it run my code?

No — it explains, writes and reviews code. Run and test it in your own environment.

Every top AI model, one side panel

Try GPT-6.1, Claude, Muse and Grok free — 3 requests, no card needed.

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