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204 challenges · AI frontend engineering in practice

Master the
Web Platform

Sharpen your HTML, CSS, and JavaScript skills through real coding challenges, with focused Topics on AI-assisted frontend development coming soon.

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204
Challenges
4
Active Developers
0
Topics in Development
1
Solutions Published

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BuildHard

Appointment Scheduling Interface

Build a responsive Appointment Scheduling Interface with date/time structure, schedule details, and clear controls.

FinishHard

Attachments Panel

Add preview entries and per-file removal controls for a dropzone so files can be reviewed before upload.

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Debug
Hard

Input Catalog

Fix why a design-system reference page flashes the wrong theme for a moment before the saved preference takes effect.

Review codeMedium

Checkout Payment Panel

Review a checkout payment step for card-validation logic bugs and a keyboard-inaccessible payment method selector.