演示

代码如下

a:active, a:hover {
	outline: 0;
	letter-spacing: 0;
	text-shadow: 0 0 80px rgb(255 255 255 / 50%);
	-webkit-background-clip: text;
	background-clip: text;
	-webkit-text-fill-color: #00000040;
	background-image:linear-gradient(135deg,#0071EF 0%,#f16b6f 25%,white 25%,white 50%,#0071EF 50%,#ff3355 75%,white 75%,white 100%);
    animation: move 50s linear infinite;
	-webkit-animation: move 50s linear infinite;
	background-size:60px 60px;
    transition: ease-in-out 0.2s;
}
a {
	transition: ease-in-out 0.2s;
}
@keyframes move {
	0% {
		background-position: 0 0;
		}
	100% {
		background-position: 2000px 0;
	}
}