.back-to-top-btn{position:fixed;right:32px;bottom:32px;z-index:999;pointer-events:none;opacity:0;transition:opacity .2s linear;width:36px;height:36px;background-color:#e4e4e4;border-radius:18px;border:0 none}.back-to-top-btn:hover{background-color:#3c434d}.back-to-top-btn:hover .app-icon-chevron:before{color:#fff}.back-to-top-btn--visible{opacity:1;pointer-events:all}.back-to-top-btn .app-icon-chevron:before{transform:rotate(180deg)}@media (max-width: 767.98px){.back-to-top-btn{display:none}}