.cvpresen {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 60;
}

.innervbck {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: black;
  opacity: 0.8;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=80)";
  position: fixed;
}

.innervpresen {
     position: fixed;
     top: 50%;
     margin-top: -300px;
     left: 50%;
     width: 800px;
     height: 600px;
     margin-left: -400px;
}


.innervpresen iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}