.imagepreview {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }
  
  /* Add Animation - Zoom in the Modal */
  .modal-content, #caption {
    animation-name: zoom;
    animation-duration: 0.6s;
  }
  
  @keyframes zoom {
    from {transform:scale(0)}
    to {transform:scale(1)}
  }