@media screen and (max-width:981px){.large-image{height:auto!important;margin-bottom:20px}.thumbnail{height:auto!important}}.content-section h2{margin-bottom:15px;color:#333}.thumbnail{min-width:calc(25% - 8px);height:120px;object-fit:cover;cursor:pointer;transition:transform .3s,box-shadow .3s}.thumbnail:hover{transform:scale(1.02);box-shadow:0 4px 8px rgba(0,0,0,.2)}.thumbnail.active{border:3px solid #3498db}.large-image{width:100%;height:500px;object-fit:cover;display:none}.large-image.active{display:block;animation:fadeIn .5s}