.scrollup{
        width:40px;height:40px;
        -ms-filter:progid:DXImageTransform.Microsoft.Alpha(Opacity=80);
        filter:alpha(opacity=80);
        opacity:.8;position:fixed;
        bottom:100px;right:15px;
        display:none;text-align:center;color:#fafafa;
        font-size:28px;background:#9e9e9e;z-index:9999;
    }
.scrollup i{
        line-height:38px;
        border-radius:2px;
    }
a.scrollup:hover, a.scrollup:focus{
    text-decoration:none;
    color:#fafafa;
    outline:none;
}