:root {
  color-scheme: dark light;
}

html {
  box-sizing: border-box;
}

*, *:before, *:after {
  box-sizing: inherit;
}

body {
  margin: 1rem;
  font-family: system-ui, sans-serif;
}

img,
video {
  height: auto;
  max-width: 100%;
}

button {
  display: flex;
}

button .icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  background-size: 1em;
}

@media (prefers-color-scheme: dark) {
  button .icon {
    filter: invert();
  }
}

.share {
  background-image: url('share.svg');
}

.sharemac {
  background-image: url('sharemac.svg');
}