#back-to-top{

    position:fixed;

    right:30px;

    bottom:30px;

    width:50px;

    height:50px;

    background:#b11f36;

    color:#fff;

    border-radius:50%;

    display:flex!important;

    align-items:center;

    justify-content:center;

    font-size:18px;

    text-decoration:none;

    opacity:0;

    visibility:hidden;

    transform:translateY(20px);

    transition:.3s;

    z-index:9999;

    box-shadow:0 5px 15px rgba(0,0,0,.2);

}

#back-to-top:hover{

    background:#93162c;

    color:#fff;

}

#back-to-top.show{

    opacity:1;

    visibility:visible;

    transform:translateY(0);

}