canvas {
  width: 64px;
  height: 64px;
  display: inline-block;
  background-color: gainsboro;
}

@media (prefers-color-scheme: dark) {
  body {
    color: white;
    background-color: black;
  }

  a {
    color: #5dc1fd;
  }

  a:visited {
    color: #ed6eff;
  }
}