Array
(
    [0] => 
    [nav_menu_locations] => Array
        (
        )

    [custom_css_post_id] => -1
    [hero_width] => contents
    [instagram] => 1
    [pinterest] => 1
    [margin_header] => 10px
    [skin] => vent
)
極端な例: ネスト化された混合リストcontent-list-summary.php