AI CSS Animations

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Constellation Frame

Twelve faint stars sit around the frame, then lines draw from star to star in order to form three constellations, each star flaring as a line reaches it before the sky fades back.

Also known as: constellation border css, star line animation, starry frame css, connect the stars border.

Night sky

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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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