@media (max-width: 768px) {
    .view-display-id-theme_list_citizens .views-row, .view-display-id-theme_list_pros .views-row,
    .view-display-id-all_themes_citizens .view-content .views-row, .view-display-id-all_themes_pros .view-content .views-row {
        width: 50%;
    }
}