.thumb {
                            background-size: cover;
                            background-position-y: center;
                        }

                        .thumb_box {
                            height: 150px;
                        }

                        .thumb_box_large {
                            height: 300px;
                        }

                        @media (min-width: 768px) {
                            .thumb_box {
                                height: 250px;
                            }
                        }