.gu-mirror {
      position: fixed !important;
      margin: 0 !important;
      z-index: 9999 !important;
      opacity: 0.8;
      -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=80)";
      filter: alpha(opacity=80);
}
.gu-hide {
      display: none !important;
}
.gu-unselectable {
      -webkit-user-select: none !important;
      -moz-user-select: none !important;
      -ms-user-select: none !important;
      user-select: none !important;
}
.gu-transit {
      opacity: 0.2;
      -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=20)";
      filter: alpha(opacity=20);
}