.left {
  background: white;
  position: absolute;
  height: 130px;
  width: 12px;
  z-index: 5;
}
.top {
  background: white;
  position: absolute;
  height: 12px;
  width: 315px;
  z-index: 5;
}
iframe {
  z-index: 3;
}