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Wax Seal Send Button
A Send button drawn as an open envelope: click and the letter slides in, the flap folds shut in 3D, a wax seal in your color drops and spreads, then the envelope tilts and flies off as Sent lands.
Also known as: envelope send button animation, wax seal animation css, send letter button, mail sent animation css.
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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.
Customizing this snippet
- Color: set
--btn-coloron the element or a parent. Currently previewing#3b82f6. - Base size: set
--btn-size. Every other dimension is inem, so the whole thing scales together. Currently previewing18px. - Speed: change the duration on the
transitionoranimationshorthand. Staggered delays are relative, so they keep their rhythm. - Reduced motion: the rule at the end of the CSS turns the motion off for people who asked their OS for less of it. Keep it.