Premium
Bars along the top and bottom edges bounce like an audio spectrum, loudest in the bass. A peak cap above each bar holds at its highest point, then drops slowly like a real meter.
Also known as: audio spectrum border, equalizer bars css, music visualizer frame, peak meter animation 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.
--bdr-color on the element or a parent.
Currently previewing #3b82f6.--bdr-size. Every other dimension is in
em, so the whole thing scales together. Currently previewing 16px.transition or animation
shorthand. Staggered delays are relative, so they keep their rhythm.