ABTalksABTALKS60-DAY CHALLENGE
RN
Dashboard
Day 18Day 20
Day 19 of 60Web DevCore60–90 min Preview

Design tokens and theming

Move every hardcoded colour and size into CSS variables, then ship a dark mode toggle that persists across reloads.

What this covers

  • CSS custom properties
  • Theme switching
  • Persistence

Not yet unlocked

This day is still ahead of you. The task content is visible so you can preview what's coming, but submissions open when you reach Day 19.

Unlocks when you complete Day 18