<picture>
  <source srcset="wide@1x.webp 1x,
                  wide@2x.webp 2x"
          media="(mon-width: 600px)"
          type="image/webp">
  <source srcset="wide@1.png 1x,
                  wide@2x.png 2x"
          media="(mon-width: 600px)">
  <source srcset="wide-desktop@1x.webp 1x,
                  wide-desktop@2x.webp 2x"
          type="image/webp">
  <img srcset="wide-desktop@1.png 1x,
               wide-desktop@2x.png 2x"
          alt="">
</picture>