.videocontainer{
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    overflow: hidden;
    position: relative;
  }
  .videocontainer.r1{
    padding-bottom: 100%;
  }
  .videocontainer iframe, .videocontainer embed, .videocontainer object{
    width: 100%!important;
    height: 100%!important;
    position: absolute;
    top: 0; left: 0;
  }