.a-gallery-thumbnails {
    display: flex;
    padding: 0;
  }
  
  .a-thumbnail {
    list-style: none;
    margin: 0 0.2rem;
    cursor: pointer;
  }
  
  .a-thumbnail img {
    width: 100%;
    height: auto;
  }

  @media (max-width: 400px) {
  
  .a-thumbnail {
    max-width: 140px;
    max-height: 45px;
  }
}