Pill shrink-on-press

Pill shrink-on-press: a CSS button. Copy the rules, or the prompt that rebuilds it.

CSS

.btn-021 {
  font: 600 14px/1 system-ui,sans-serif;
  color: #fff;
  background: #16a34a;
  border: 0;
  border-radius: 999px;
  padding: 12px 26px;
  cursor: pointer;
  transition: transform .1s,background .15s
}
.btn-021:hover {
  background: #15803d
}
.btn-021:focus-visible {
  outline: 2px solid #16a34a;
  outline-offset: 3px
}
.btn-021:active {
  transform: scale(.94);
  background: #166534
}

HTML

<button class="btn-021">Send</button>

Prompt

A green pill button #16a34a, white 14px semibold text, 12px by 26px padding, fully rounded. Hover #15803d; on press it scales to 94% over 100ms and darkens to #166534. Focus outline 2px green offset 3px.

Pill shrink-on-press

Same shelf