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Two glass tubes count up in warm orange light, the lit digit stacked in front of faint unlit ones. Each change flickers, and the count ends in a fast cathode-cycling roll that slows before it lands.
Also known as: nixie tube animation css, nixie clock loader, glowing tube digits, retro number counter.
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--ldr-color on the element or a parent.
Currently previewing #3b82f6.--ldr-size. Every dimension in the snippet is
derived from it. Currently previewing 64px.animation shorthand.
Delays on the children are relative, so they keep their rhythm.role="status" and an
aria-label so screen readers announce the wait. The reduced-motion rule
at the end slows the animation for users who asked for less motion.