AI CSS Animations

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Spectrum Analyzer Border

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.

Now playing-12 dB

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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 --bdr-color on the element or a parent. Currently previewing #3b82f6.
  • Base size: set --bdr-size. Every other dimension is in em, so the whole thing scales together. Currently previewing 16px.
  • Speed: change the duration on the transition or animation shorthand. 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.

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