Make a bird button wave

<button>☀️</button>
<style>
button {
  font-size: 2em;
  background-color: #fcfcfc;
  border: 2px solid #eee;
  border-radius: 4px;
  margin: 4px;
}

button:active {
  transform: translate(0, 2px);
}
</style>