#centerAdBox .adItem {
  display: none;
  position: fixed;
  width: 505px;
  height: 305px;
  top: 50%;

  left: 50%;

  z-index: 15;
transform: translate3d(-50%, -50%,0);
}
#centerAdBox .adItem a.closeAdBtn {
  position: absolute;
  display: block;
  width: 80px;
  height: 80px;
  top: 7px;
  right: 7px;
  cursor: pointer;
  opacity: 1;
}