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Firefly Jar Toggle
A corked glass jar of sleeping fireflies. Switch it on and they wake one by one, glow up and drift on their own looping paths while the glass fills with light.
Also known as: firefly toggle switch, glowing jar toggle css, fireflies animation css, bioluminescent toggle.
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Customizing this snippet
- Color: set
--tgl-coloron the element or a parent. Currently previewing#3b82f6. - Size: set
--tgl-size. Every other dimension is inem, so the whole thing scales together. Currently previewing24px. - 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.