.back-to-top{position:fixed;z-index:80;right:24px;bottom:96px;width:46px;height:46px;display:grid;place-items:center;border:0;border-radius:50%;background:var(--green-dark,#111);color:#fff;box-shadow:0 10px 25px rgba(0,0,0,.22);cursor:pointer;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .25s ease,transform .25s ease,visibility .25s,background .2s}
.back-to-top.show{opacity:1;visibility:visible;transform:none}
.back-to-top:hover{background:var(--green,#e30613)}
.back-to-top svg{width:20px;height:20px;fill:currentColor}
@media(max-width:850px){.back-to-top{right:16px;bottom:84px;width:42px;height:42px}}
.whatsapp-off .back-to-top{bottom:24px}
@media(max-width:850px){.whatsapp-off .back-to-top{bottom:20px}}