body {
  background-color: white;
  color: #111111;
  font-family: "Computer Modern";
}

.example {
  background-color: #dddddd;
}

.important {
  background-color: #85a269;
}

.correct {
  background-color: #84cd87;
}

.incorrect {
  background-color: #f7aeb8;
}