#centerAdBox .adItem {
  display: none;
  position: fixed;
  width: 500px;
  height: 330px;
  top: 50%;
  margin-top: -165px;
  left: 50%;
  margin-left: -250px;
  z-index: 11;
}
#centerAdBox .adItem a.closeAdBtn {
  position: absolute;
  display: block;
  width: 40px;
  height: 40px;
  top: 6px;
  right: 12px;
  cursor: pointer;
  opacity: 1;
}