CSS @media rules

[birneee]

https://developer.mozilla.org/en-US/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images

like https://github.com/ericf/css-mediaquery

in css e.g.:

@media only screen and (max-width: 734px) and (-webkit-min-device-pixel-ratio: 1.5),
only screen and (max-width: 734px) and (min-resolution: 1.5dppx),
only screen and (max-width: 734px) and (min-resolution: 144dpi)

in html e.g.:

<picture>
  <source type="image/svg+xml" srcset="pyramid.svg" />
  <source type="image/webp" srcset="pyramid.webp" />
  <img
    src="pyramid.png"
    alt="regular pyramid built from four equilateral triangles" />
</picture>
<img
  srcset="elva-fairy-480w.jpg 480w, elva-fairy-800w.jpg 800w"
  sizes="(max-width: 600px) 480px,
         800px"
  src="elva-fairy-800w.jpg"
  alt="Elva dressed as a fairy" />