.video-flex {
    display: flex;
  }
  .video-content3 {
    width:100%;
    height: 513px;
    object-fit: fill;
  }
 .bgCh {
    width: 100%;
    height: 513px;
    overflow: scroll;
  }
   .bg-center1 {
    width: 84%;
    height: 140px;
    margin-left: 12px;
    object-fit: fill;
    margin-top: 10px;
    /* margin-bottom: 10px; */
  }
  /* ÐÞ¸Ä */
  .active {
    border:2px solid red;
  }
  /* Ìí¼Ó */
  .bg-center1:last-child
  {
    margin-bottom: 10px;
  }