<button id="play" class="action-btn action-btn-big" data-type="play">
  <i class="icon"></i> Button
</button>

body {
  padding: 2rem;
}
.action-btn { 
  width: 10em;
  height: 3em;
  display: flex;
  align-items: center;
}

.icon {
  width: 2em;
  background: red;
  flex-shrink: 0;
  height: 2em;
}

document.addEventListener("click", (e) => {
  if (e.target.closest("[data-type=play]")) {
    alert("Click on button");
  }
});