body {
  color: gray;
  background-color: black;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.quote {
  font-size: 300%;
  text-align: center;
}
.author {
  font-size: 200%;
  text-align: right;
}