.preview {
overflow: hidden;
width: 160px;
height: 160px;
margin: 10px;
border: 1px solid red;
}
.img-container {
    margin-bottom: 1rem;
    max-height: 497px;
    min-height: 200px;
  }
  
  @media (min-width: 768px) {
    .img-container {
      min-height: 497px;
    }
  }
  
  .img-container > img {
    max-width: 100%;
  }