vvvw/static/css/style.css

* {
  background-color: gray;
}

#video1 {
  margin-top: 300px;
}

.draggable {
  position: absolute;
}

.draggable img {
  opacity: 0.7;
}

.draggable iframe {
  padding: 20px;
}
#video2 {
 margin-top: 100px;
}

#audio1 {
  margin-left: 400px;
}