body {
  background-color: #fff;
}
div#list {
  display: none;
}
div.list-clone {
  position: fixed;
}

@media (prefers-color-scheme: light) {
  body {
    background-color: #fff;
  }
}
@media (prefers-color-scheme: dark) {
  body {
    background-color: #000;
  }
}