.scroll-to-top a{width:40px;height:40px;background:#000;color:#fff;text-align:center;font-size:20px;transition:.3s;border-radius:50%;vertical-align:middle;display:flex;align-items:center;justify-content:center;text-decoration:none}.scroll-to-top:hover a{background:#ccc;color:#000}.scroll-to-top{position:fixed;bottom:4%;z-index:999}