body {
  background-color: red; /* For browsers that do not support gradients */
  background-image: linear-gradient(0deg, Red , Orange, Yellow, Green, Blue, Indigo, Violet);
}

h1 {
  font-size: 60px;
  color: white;
  text-align: center;
}

h3 {
  font-size: 35px;
  color: white;
  text-align: center;
}

#rainbow{
  height: 300px;
  background-color: red; /* For browsers that do not support gradients */
  background-image: linear-gradient(to right, Red , Orange, Yellow, Green, Blue, Indigo, Violet);
}

p {
  text-align: center;
  font-family: verdana;
  font-size: 20px;
  color: white;
  padding-left: 15%;
  width: 70%;
}