.page-top{

    position:fixed;

    right:24px;

    bottom:24px;

    width:56px;

    height:56px;

    border:none;

    border-radius:50%;

    background:#1565c0;

    color:#fff;

    font-size:22px;

    cursor:pointer;

    box-shadow:0 8px 20px rgba(0,0,0,.15);

    transition:.25s;

    z-index:9999;

}

.page-top:hover{

    background:#0d47a1;

    transform:translateY(-3px);

}

@media(max-width:768px){

    .page-top{

        width:48px;
        height:48px;
        right:16px;
        bottom:16px;

    }

}