Fireworks Explosion

About Fireworks Explosion

Fireworks Explosion is a checkbox built with a keyframe animation, gradient fills and transforms. Its stylesheet runs to 154 lines across 29 rules, declaring 20 distinct properties. It styles checked state explicitly, so the component responds to interaction rather than sitting still. The animation is driven by keyframe sequences named center-explode, spark-explode and flash-burst, which you can retime or remove without touching the rest of the styling. Every format shown on this page is the same component, so you can take CSS and Tailwind depending on how your project is set up. Nothing is minified and nothing depends on a framework.

When to use

• Settings panels and forms, where state has to read at a glance, where a fireworks and explosion checkbox fits the surrounding design
• A single prominent checkbox rather than a row of them, since the center-explode animation runs continuously and several at once compete with each other
• Palettes built around red, blue and yellow, where this checkbox can be dropped in without retheming
• Places where one control is meant to be memorable, since 154 lines of CSS is a real investment for a single element
• Design systems, since the colours sit in custom properties and can be themed centrally

How it works

The base rule sets the shape with border-radius, display, height and position. The fill is a gradient rather than a flat colour, so it is a single background declaration with no image to load. Movement is done with transforms rather than by changing position or size, which is what keeps it smooth: transforms are composited and do not force the browser to lay the page out again. State changes are eased with a transition, so hovering does not snap. The looping motion comes from center-explode, spark-explode and flash-burst. Changing the animation-duration is usually the only edit needed to make it faster or calmer. Colours are held in custom properties, so retheming means editing the variables at the top rather than hunting through the rules.

Accessibility

No focus style is defined. Add one before shipping, or keyboard users lose track of position. Animates without a prefers-reduced-motion guard. Wrap the animation in that query if motion sensitivity matters to your audience. Those are 2 things to fix before this ships in front of users.

Browser support

Everything this component uses has been supported across browsers for years, so no fallback is needed.

Related components

Frequently asked questions