.rb_gallery_grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(35%, 1fr));
    gap: 70px 40px;
    margin: 0 auto;
    padding-top:40px;
    padding-bottom:40px;
}

.bbs_prd_list .g_img img {width: 100%; height:auto; border-radius: 0px; object-fit: cover;}

@media all and (max-width:1024px) {
    .rb_gallery_grid {
        grid-template-columns: repeat(auto-fill, minmax(50% ,1fr));
        gap: 70px 20px;
    }
}