.back-to-top-btn{bottom:100px;display:none;position:fixed;right:50px;z-index:11}.back-to-top-btn:active,.back-to-top-btn:focus,.back-to-top-btn:hover{color:#fff}.back-to-top-btn.show{display:block}@media (max-width:1199px){.back-to-top-btn{display:none!important}}