pas2js/demo/opentok/css/app.css

/* Enter your classes/style definitions here */
body, html {
  background-color: #eee;
  /* height: 100%; */
  max-width: 1000px;
  margin: auto;
}

#videos {
  position: relative;
  width: 100%;
  height: 100%;
  margin-left: auto;
  margin-right: auto;
}

.subscriber {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
}

.publisher {
  position: absolute;
  width: 360px;
  height: 240px;
  bottom: 10px;
  left: 10px;
  z-index: 100;
  border: 3px solid white;
  border-radius: 3px;
}