iner--destination flow">
    <h1 class="numbered-title"><span aria-hidden="true">01</span> Pick your destination</h1>
    
    <picture id="moon-image">
      <source srcset="assets/destination/image-moon.webp" type="image/webp">
      <img src="assets/destination/image-moon.png" alt="the moon">
    </picture>
    <picture hidden id="mars-image">
      <source srcset="assets/destination/image-mars.webp" type="image/webp">
      <img src="assets/destination/image-mars.png" alt="the planet mars">
    </pictur