Button#48

<a className="bn48" href="/">Button</a>

.bn48 {
  background: linear-gradient(90deg, #1e39a5, #c50e07);
  background-size: auto;
  background-clip: border-box;
  -webkit-background-clip: text;
  background-clip: text;
  background-size: 300% 300%;
  -webkit-text-fill-color: transparent;
}