h1  {
  background-color: black;
  color: white;
  font-family: Helvetica;
  font-size: 125px;
  margin: auto;
    max-width: 1200px;
}
body {
  background-color: black;
  color: white;
  font-family: Courier;
  margin: auto;
    max-width: 900px;
}
.rainbow-text {
  background-image: linear-gradient(to right, red, orange, yellow, green, cyan, blue, indigo, magenta);
  background-size: 85% 40px;
}
.rainbow-text {
  background-image: linear-gradient(to right, red, orange, yellow, green, cyan, blue, indigo, magenta);
  background-size: 85% 40px;
  -webkit-background-clip: text;
}
.rainbow-text {
  background-image: linear-gradient(to right, red, orange, yellow, green, cyan, blue, indigo, magenta);
  background-size: 85% 40px;
  -webkit-background-clip: text;
  color: transparent;
}