@media screen and (min-width: 1001px) {
    .home .custom-post-items .custom-post-grid:nth-child(1) {
        flex: 0 0 calc(66.66666% - 30px);
    }
    .home .custom-post-items .custom-post-grid:nth-child(2) {
        flex: 0 0 calc(33.33333% - 30px);
    }
}