.gallery {
   display: grid;
   grid-template-columns: repeat(auto-fit, 320px);
   grid-auto-rows: auto;
   grid-auto-flow: dense;
   transition: grid-auto-flow 0.3s ease-in-out;
   gap: 5px;
 }
 .gallery img {
   width: 100%;
   height: 100%;
   object-fit: cover;
 }
 .gallery .w2 {
   grid-column: span 2 / auto;
 }
 .gallery .h2 {
   grid-row: span 2 / auto;
 }