.video-container {
    position: relative;
    font-size: 15pt;
}

.video-sidebar {
  position: absolute;
  top: 0;
  left: 0;
  width: 30%;
  height: 30%;
  background-color: rgba(255, 255, 255, 0.8); 
}

video {
  width: 100%;
}