.knk_banner-image-video {
  position: relative;
  height: var(--img-height);
}
.knk_banner-image-video img {
  display: block;
  width: 100%;
  height: auto;
}
.knk_banner-image-video video {
  display: block;
  height: 100%;
  width: 100%; 
  object-fit: cover;  
}
 @media (max-width: 767px) {
  .knk_banner-image-video {
    /*height: var(--img-height-mb);*/
     height: 100%;
  }
  .knk_banner-image-video video {
      width: 100%;
      height: auto;
  }
}