.post_gallery{display:grid;gap:5px;width:100%;position:relative;}
.post_gallery_item{ border: 1px solid #eee; cursor: pointer; }
.post_gallery_item img{width:100%;height:100%;object-fit:cover;}
.post_gallery_item_1{grid-template-columns:1fr;}
.post_gallery_item_2{grid-template-columns:1fr 1fr;}
.post_gallery_item_3{grid-template-columns:repeat(2,1fr);}
.post_gallery_item_3>.post_gallery_item:nth-child(1){grid-column:auto / span 2;}
.post_gallery_item_4{grid-template-columns:repeat(3,1fr);}
.post_gallery_item_4>.post_gallery_item:nth-child(1){grid-column:auto / span 3;}
.post_gallery_item_5{grid-template-columns:repeat(3,1fr);}
.post_gallery_item_5>.post_gallery_item:nth-child(1){grid-column:auto / span 3;}
.post_gallery_item_5>.post_gallery_item:nth-child(4){position:relative;}
.post_gallery_item_5>.post_gallery_item:nth-child(4)::after{width:100%;height:100%;position:absolute;inset:0;content:attr(data-see-more) " ";background-color:rgba(0,0,0,.65);color:#fff;display:flex;justify-content:center;align-items:center;z-index:5;font-size:1.2rem;font-weight:bold;}
.post_gallery_item_5>.post_gallery_item:nth-child(n + 5){display:none;}