.anim-bg-gradient{padding:.6em 1.2em;border-radius:.375em;cursor:pointer;color:#fff;background:linear-gradient(120deg,#8b008b,#dc143c,orange);background-size:200% 100%;background-position:100% 0;transition:background-position .5s}.anim-bg-gradient:hover{background-position:0 0}body{display:flex;height:100vh;justify-content:center;align-items:center}button{padding:0;border:none;background:none}