Morphing Blob Button

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Background:
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<button class="blob-btn">
  <span class="blob-text">Blob</span>
</button>
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What is inside Morphing Blob Button

Morphing Blob Button is a CSS button built with a keyframe animation, gradient fills, transforms, defined in 36 lines across 5 selectors.

17
CSS properties
5
Selectors
36
Lines of CSS
2
Formats

Techniques used

Keyframe animationTransitionsTransformsGradientsPseudo elements

Animations defined: blob-morphblob-rotate

CSS properties in this component

animationbackgroundborderborder-radiuscolorcontentcursorfont-weightheightleftpaddingpositiontoptransformtransitionwidthz-index

Accessibility check2 to fix

  • Built on a native <button> element, so keyboard focus and screen reader semantics work without extra attributes.
  • 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.

These notes are generated by reading this component's own source, so they describe what it actually does rather than what a template says. Copy the code above in HTML, CSS and adapt it freely.

About Morphing Blob Button

Morphing Blob Button is a button built with a keyframe animation, gradient fills, transforms and pseudo elements. Its stylesheet runs to 36 lines across 5 rules, declaring 17 distinct properties. The animation is driven by keyframe sequences named blob-morph and blob-rotate, 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 HTML and CSS depending on how your project is set up. Nothing is minified and nothing depends on a framework.

When to use

How it works

The base rule sets the shape with border-radius, height, padding and position. The fill is a gradient rather than a flat colour, so it is a single background declaration with no image to load. A pseudo element carries part of the effect, which keeps the markup to one element while giving the CSS a second surface to animate. 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 blob-morph and blob-rotate. Changing the animation-duration is usually the only edit needed to make it faster or calmer.

Accessibility

Keyboard navigation
Supported
Screen reader
Friendly
ARIA
Native element semantics, no extra attributes needed

Built on a native <button> element, so keyboard focus and screen reader semantics work without extra attributes. 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

Chrome
26+
Firefox
16+
Safari
9+
Edge
12+

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

Frequently asked questions