.site-back-top-btn{position:fixed;right:15px;bottom:65px;z-index:2;opacity:0;border:1px solid #fff;transition:opacity .8s ease-out}.site-back-top-btn:focus{outline:1px dotted #fff}@media (min-width:750px){.site-back-top-btn{right:30px}}.site-back-top-btn .btn-top{display:block}.site-back-top-btn--active{opacity:1;transition:opacity .8s ease-in}.site-back-top-btn--no-sticky{position:static;text-align:right;margin-right:15px;margin-bottom:50px}@media (min-width:750px){.site-back-top-btn--no-sticky{margin-right:30px}}