.wp-block-query ul.wp-block-post-template li.wp-block-post.ueberseeclub_partner:nth-child(odd) {
    background: var(--wp--preset--color--primary);
}

@media (max-width: 780px) {
    .wp-block-query .wp-block-post.ueberseeclub_partner .wp-block-columns { 
        gap: 0;
    }
   .wp-block-query .wp-block-post.ueberseeclub_partner .wp-block-column { 
        border:none;
        padding:2em ;
    }
    .wp-block-query .wp-block-post.ueberseeclub_partner .wp-block-column p { 
        text-align: left;
    }
}