body .thumb {
    width: 100%;
    aspect-ratio: 1;
}
  
body .thumb > img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

body .owl-thumb-item > img,
body .owl-thumb-item.active > img {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
}