.zoom {
  transition: 1s ease-in-out;
}

.zoom:hover {
  transform: scale(2);
}

<div class="content">
  <div class="zoom">
    <img alt="Paperplane" src="https://via.placeholder.com/200" style="width: 200px; height: 62px">
    <br> <span class="caption">A paper plane</span>
  </div>
</div>