.banner-btn{background:linear-gradient(90deg,#1d909b 0%,#559b9b 50%,#9b9b9b);background-size:200%,1px;transition:all 200ms linear 0ms;color:#fff;font-size:15px;padding:15px 20px;border-radius:10px;margin-right:10px}.banner-btn:hover{background-position:100%}