Image cropping fix

image-cropping.php

<?php
if ( has_post_thumbnail( $post_id ) ) {
  // Get Featured Image
  $class = 'img-thumb';
  $post_thumbnail_id	 = get_post_thumbnail_id( $post_id );
  $image_exists		 = wp_get_attachment_image_src( $post_thumbnail_id, 'thumbnail-size' );

  if ( !$image_exists[ 3 ] ) {
    $class = 'img-not-thumb';
  }
  
  ?>
  <a href="<?php the_permalink(); ?>" title="<?php echo esc_attr( sprintf( __( 'Permalink to %s', 'marvy' ), the_title_attribute( 'echo=0' ) ) ); ?>" class="<?php echo $class; ?>">
    <?php the_post_thumbnail( 'thumbnail-size' ); ?>
  </a><?php
}

// Following css required
echo '
.img-not-thumb {
    position: relative;
    overflow: hidden;
    padding-bottom: 69.44%; /* Calculated = height / width * 100 */
    display: block;
}

.img-not-thumb img {
    position: absolute;
    top: 0;
    /*bottom: 0;*/
    left: 0;
    right: 0;
    margin: auto;
    z-index: 0;
    min-height: 100%;
    width: auto;
    /*max-height: 100%;*/
    max-width: 100%;
    min-width: 100%;
    object-fit: cover;
}
';