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

.grad1 {
    background: red;
    background: -webkit-linear-gradient(left, orange , yellow, green, cyan, blue, violet);
    background: -o-linear-gradient(right, orange, yellow, green, cyan, blue, violet);
    background: -moz-linear-gradient(right, orange, yellow, green, cyan, blue, violet);
    background: linear-gradient(to right, orange , yellow, green, cyan, blue, violet);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 16px;
}