Premium
Five dominoes topple in a chain, each timed to the moment the one before it makes contact. The last knocks the box, which spins on its axle to the ticked face. Unchecking rewinds from the far end.
Also known as: domino checkbox, chain reaction animation css, domino effect toggle, falling dominoes css.
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.