html, body {
  padding: 0;
  margin: 0;
  background: black;
  color: white;
  font-family: Arial;
  line-height: 1;
  font-size: 18px;
}

html.light, html.light body {
  background: white;        
  color: black;
}

body.settings {
  margin: 0 auto;
  width: 800px;
  line-height: 1.5;
  padding-top: 20px;
}

body {
  height: 100vh;
}

.inverted {
  filter: invert(100%);
}