<h2 class="box1">hello world !</h2>
<h2 class="box2">hello world !</h2>

h2 {
  font-size: 28px;
  text-align: center;
  color: transparent;
}
.box1 {
  background: linear-gradient(#ff6347, #ffffff);
  -webkit-background-clip: text;
}
.box2 {
  background: linear-gradient(0.25turn, #3f87a6, #ebf8e1, #f69d3c);
  -webkit-background-clip: text;
}