body {
  background-color: white;
  color: black;
}

.dark-mode {
  background-color: black;
  color: white;
}
.div {
  background-color: black;
  color: white;
}
 {
  background-color: white;
  color: black;
}
div.t396
.dark-mode2 {
  background-color: black;
  color: white;