<div class="piston-container">
  <input type="checkbox" id="piston-check" />
  <label for="piston-check" class="piston-label">
    <span class="piston-engine">
      <span class="piston-cylinder"></span>
      <span class="piston-rod"></span>
      <span class="steam-cloud steam-1">💨</span>
      <span class="steam-cloud steam-2">💨</span>
    </span>
    <span class="piston-text">Steam Piston</span>
  </label>
</div>