Heartbeat CSS Button

Free31 lines · no JS · WCAG AA large 3.8

Open in Studio

Theme

A real <button> carrying .btn-heartbeat — the preview is the stylesheet, not a picture of it.

States

default

hover

focus-visible

active

not declared

disabled

not declared

.btn-heartbeat {
  display: inline-block;
  padding: 12px 26px;
  border: none;
  border-radius: 12px;
  background: #ef4444;
  color: #ffffff;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  animation: btn-heartbeat-thump 1.6s ease-in-out infinite;
}
.btn-heartbeat:hover {
  animation-duration: 0.8s;
}
@keyframes btn-heartbeat-thump {
  0%, 28%, 70%, 100% {
    transform: scale(1);
  }
  14% {
    transform: scale(1.08);
  }
  42% {
    transform: scale(1.06);
  }
}
.btn-heartbeat:focus-visible {
  outline: 2px solid #ef4444;
  outline-offset: 3px;
}

Self-contained · MIT · no build step.btn-heartbeat

PlayfulRoundedElasticAnimated

Implementation notes

About the Heartbeat CSS button

Heartbeat uses expressive color, shape and feedback for characterful products. Its rounded corners balance product-friendly softness with a clear boundary. Motion comes from a 1.6s keyframe animation. The elastic, animated details are included in the copy-paste CSS.

Usage

<button class="btn-heartbeat">♥ Like</button>

Pair it with the CSS tab above — the class is self-contained.

Before shipping: keep the semantic button element, verify contrast on your actual background and add a visible:focus-visible state. If you retain motion, include a prefers-reduced-motion override.

Built with: HTML + plain CSS
Shape: Rounded
Exports: CSS, Tailwind, React
License: MIT · commercial use

Complete the look

Build the interface around this button

We matched its palette, surface, geometry and motion to a complete UI system — like composing an outfit, not browsing unrelated parts.

Style DNA · v1

How matching works →

Pro preview

Modal81% match