← You can't transition a CSS variable. @property says otherwise.Quiz
CSS @property: typed custom properties
Why an unregistered CSS variable snaps instead of easing, and how @property gives it a real type, an initial value, and the ability to animate. Covers syntax, initial-value, and the gradient-angle trick.
questions6
pass mark70%
resultsat the end
No account needed. Answer all 6 questions, then see your score with every answer explained and a reference to the spec or MDN — pass and you can claim a certificate.