@keyframes gradient-animation{0%{background-position:-1600px 0}to{background-position:1000px 0}}.gradient-border{background-image:linear-gradient(135deg,#0000 30%,#e0e0e015 50%,#0000 70%);background-position:-1600px 0;background-repeat:no-repeat;background-size:200% 200%;animation-name:gradient-animation;animation-duration:4s;animation-timing-function:ease;animation-iteration-count:infinite}