body{
  margin: 0;
  width: 100%;
}
.main-section{
  /* width: 100%;
  height: 100vh; */
  height: 75vh;
  background: #fff;
  width: 75%;
  margin: 30px auto;
}

.main-section .video-js{
    width: 100%;
    height: 100%;
}