.bordered-timeline{position:relative}.bordered-timeline:before{content:"";position:absolute;bottom:0;width:100%;height:4px;background:linear-gradient(180deg,#7000ff,#fff);background-size:100% 200%;animation:gradient 1s linear infinite alternate;border-radius:10px}@keyframes gradient{0%{background-position:0 0}to{background-position:0 100%}}