.btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
}

.btn {
  display: flex;
  gap: 8px;
  &:hover { opacity: .8; }
}

<button class="
  flex items-center gap-2
  px-4 py-2 rounded-xl
">
  Copy
</button>