Preserve pixelation when scaling pixel art with CSS - https://builtvisible.com/image-scaling-in-css/

preserve-pixelation.scss

@mixin pixelated {
  -ms-interpolation-mode: nearest-neighbor;  // IE 7+ (non-standard property)
  image-rendering: -webkit-crisp-edges; // Safari 6 - 9
  image-rendering: -moz-crisp-edges; // Firefox 3.6 - 64
  image-rendering: crisp-edges; // Firefox 65+
  image-rendering: pixelated; // Chrome 41+, Edge 76+, Safari 10+
}

Very useful in the custom CSS field of the Imagus Viewhance browser extension.