Are you a beginner in FRONTEND development than you must try this challenges.

1 100 Days CSS

This challenge help you to become CSS expert in 100 days. Completely free no registration.

2 Codier.io

Worth to try FRONTEND coding challenges in CODIER.

3 CODEPEN

Have fun and level up your skills by building things.

4 FRONTEND MENTOR

Solve real HTML, CSS and JAVASCRIPT challenges here.

That's it. So go ahead smashed the challenges.
Thank you for reading!!