#mainContainer {
  position: relative;
  width: 640px;
  height: 360px;
}

#content, #adContainer {
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  background-color: #000;
}

#contentElement {
  width: 640px;
  height: 360px;
  overflow: hidden;
}

#outstreamContainer {
  width: 100%;
  height: 100%;
}