#challenge-modal .modal-header{background-color:#a60d1f}#challenge-images{display:grid;grid-template-columns:repeat(3,1fr);gap:.125rem;margin-bottom:1rem}.challenge-image{cursor:pointer;margin:0}.challenge-image img{border:3px solid transparent;border-radius:.25rem;display:block;width:100%;height:auto}.challenge-image input:checked+img{border-color:#a60d1f}