.container {
    position: relative;
    width: 100%;
    overflow: hidden;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
  }
  
  .responsive-iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
    border: none;
  }
  .col-container {
    display: table;
    width: 100%;
  }
  .col {
    display: table-cell;
    padding: 16px;
  }