#mainContainer {
  position: relative;
  display: block;
}

#promoContainer {
  position: relative;
  top: 0px;
  left: 0px;
  display: none;
}

.ad-container {
  position: relative;
  top: 0px;
  left: 0px;
  width: 720px;
  height: 415px;
  display: block;
  margin: auto;
}

.policy-container {
  position: relative;
  display: block;
  margin: 8px;
  padding: 8px;
}

.usb-charging {
  position: absolute;
  top: 107px;
  left: 0px;
  width: 720px;
  height: 200px;
  display: none;
  z-index: 1;
}
.sponsored-by {
  position: absolute;
  top: 117px;
  left: 210px;
  display: none;
  width: 300px;
  height: 170px;
  z-index: 2;
}
.psa {
  position: absolute;
  top: 83px;
  left: 210px;
  display: none;
  width: 300px;
  height: 170px;
  z-index: 2;
}

.need-charge {
  position: absolute;
  top: 70px;
  left: 185px;
  display: none;
  width: 350px;
  height: 150px;
  z-index: 2;
}

.display-ad {
  position: absolute;
  z-index: 100;
}