Premium
A tiny CRT warms up from a dot to a line to a lit screen, and a beam traces the tick in phosphor that glows hot and cools. Unchecking powers it off: the image folds to a line, then a dot.
Also known as: crt checkbox, retro monitor checkbox, tv power off animation, phosphor glow checkbox.
Premium
Everything you see above is live. Basic and Pro include every premium piece, with the HTML and CSS ready to copy, plus the Tailwind version where there is one and Motions in Claude Code on Pro.
--chk-color on the element or a parent.
Currently previewing #3b82f6.--chk-size. Every other dimension is in
em, so the whole thing scales together. Currently previewing 24px.transition or animation
shorthand. Staggered delays are relative, so they keep their rhythm.