.tv {
	width: 900px;
	height: 620px;
	position: absolute;
	top:0;
	bottom: 0;
	left: 0;
	right: 0;
	margin: auto;
}


.tv img {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  width: 550px;
}

.video {
position: absolute;
  top: 25px;
  left: 20px;
  z-index:5;
}

.b {
  width: 400px;
  height: 300px;
}

.video2 {
position: absolute;
  top: 25px;
  left: 20px;
  z-index:10;
  border: 4px solid #000;
   border-radius: 15px;
}

.videoWrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    padding-top: 25px;
    height: 0;
}
.videoWrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}