.item_img {
  border: 1px solid #666;
}

.video {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
  height: 0;
  overflow: hidden;
  margin-bottom: 3rem;
}
.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}