.tv, .tv2 {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: absolute;
}
.tv .screen, .tv2 .screen {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  margin: auto;
  opacity: 0;
  transition: opacity .5s;
}
.tv .screen.active, .tv2 .screen.active  {
  opacity: 1;
}