Start the pilot

Read each lesson, then choose Open in browser editor to try its code. Complete the guided workshop and Break / Fix before taking the five-question knowledge check. Four correct answers are needed; retries are unlimited.

Write, preview, check

1. Choose a file tab and edit the source. The preview updates automatically.
2. Use the width selector to inspect narrow and wide layouts.
3. Run checks for feedback, then repair the reported issues.
4. Do the manual checks in the activity brief.

Keep your work

Guest drafts and progress are saved in this browser. Sign in to an existing account on the website for account saving and cross-device progress. The save status tells you where your work is stored. Private browsing, clearing browser data or storage limits can remove device-only work. Download a ZIP backup regularly.

Import an exported ZIP or select your HTML, CSS, image and text files together. The pilot supports up to 12 files in one folder, below 2 MB. Import and reset ask before replacing the current draft.

Practice and independent work

Use the hints while practising. For the independent project, documentation and your own notes are allowed; AI-generated solutions and other people's finished projects are not. Browser checks are practice feedback, not trusted certificate assessment.

Preview limits

Scripts, remote resources and navigation are blocked in the isolated preview. Download files to test real links and keyboard navigation in your own browser. Automated checks cannot establish full accessibility, design quality or authorship.