# Pendulum swing (B 124)

Category: Buttons  
Tags: tilt, rotate, rounded, hinge, animated  
Page: https://designforai.dev/snippet/btn-124

## Prompt

An amber-brown #b45309 button, 8px radius, white 15px semibold text, 14px by 28px padding, with its transform origin at the top centre so it hangs like a sign. On hover it swings once (6deg, -5deg, 3deg, -2deg, settle) over 1 second and darkens to #92400e. Active drops 1px on #78350f. Focus 2px amber outline offset 4px.

## HTML

```html
<button class="btn-124">Swing</button>
```

## CSS

```css
.btn-124 {
  font: 600 15px/1 system-ui,sans-serif;
  color: #fff;
  background: #b45309;
  border: 0;
  border-radius: 8px;
  padding: 14px 28px;
  cursor: pointer;
  transform-origin: top center;
  transition: background .2s
}
.btn-124:hover {
  animation: swing124 1s ease-in-out;
  background: #92400e
}
.btn-124:focus-visible {
  outline: 2px solid #b45309;
  outline-offset: 4px
}
.btn-124:active {
  transform: rotate(0) translateY(1px);
  background: #78350f
}
@keyframes swing124 {
  20% {
    transform: rotate(6deg)
  }
  40% {
    transform: rotate(-5deg)
  }
  60% {
    transform: rotate(3deg)
  }
  80% {
    transform: rotate(-2deg)
  }
  100% {
    transform: rotate(0)
  }
}
@media (prefers-reduced-motion: reduce) {
  .btn-124, .btn-124 * { animation: none; transition: none; }
}
```