Code Sandbox for Practicing HTML and CSS
The code sandbox lets you write and edit HTML and CSS directly in the browser. Select Update to refresh the preview, or Reset to clear the sandbox and start again.
Get AI Help With Your Code
Select AI Help to analyze the code currently in the sandbox. You can ask a specific question or leave the question field empty for a general review. The analyzer can identify errors, explain how the code works, suggest corrections, and link to related lessons and articles.
Learn by Experimenting
Try changing one part of the code at a time, then update the preview to see what changed. You can safely test ideas, make mistakes, and compare different approaches without affecting a real website.