/* reference: https://en.wikipedia.org/wiki/Flag_of_Belgium */

:root {
  --flag-height: 13;
  --flag-width: 15;
  --belgium-black: #000000;
  --belgium-yellow: #ffd90c;
  --belgium-red: #ef3340;
}

#belgium {
  position: relative;
  height: 180px;
  aspect-ratio: var(--flag-width) / var(--flag-height);
  background: linear-gradient(
    90deg,
    var(--belgium-black) 0%,
    var(--belgium-black) 33.333%,
    var(--belgium-yellow) 33.333%,
    var(--belgium-yellow) 66.666%,
    var(--belgium-red) 66.666%,
    var(--belgium-red) 100%
  );
}