.back-to-top{z-index:1500;position:fixed;bottom:1em;right:1em;background:linear-gradient(to bottom right,#0078FF,#3A00FF);color:#fff;width:4rem;height:4rem;border-radius:20%;text-align:center;font-size:30px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:opacity .3s ease-in-out}.back-to-top:hover{opacity:.7!important;background:linear-gradient(to top left,#0078FF,#3A00FF)!important}.back-to-top-mobile{z-index:1500;position:fixed;bottom:.75em;right:.75em;background:linear-gradient(to bottom right,#0078FF,#3A00FF);color:#fff;width:3.5rem;height:3.5rem;border-radius:20%;text-align:center;font-size:25px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:opacity .3s ease-in-out}.back-to-top-mobile:hover{opacity:.7!important;background:linear-gradient(to top left,#0078FF,#3A00FF)!important}