green;
            bottom: 0;
            left: 0;
        }
        .thumbnail-image-button:nth-child(3) {
            border-color: pink;
            bottom: 0;
            right: 0;
        }
        .thumbnail-image-button:nth-child(4) {
            border-color: yellow;
            top: 0;
            left: 0;
        }
        .thumbnail-image-button:nth-child(5) {
            border-color: red;
            top: 0;
            right: 0;
        }

        .column-item {
            margin: 0;
        