WordPress 的主题标记 Theme_Markup

https://codex.WordPress.org/Theme_Markup

Theme Markup is a theme feature, first introduced in Version 3.6. This feature allows themes to explicitly choose to apply HTML5 markup for search forms, comment forms, comment lists, gallery, caption and widgets.
WordPress 主题标记是一个主题特色，主题标记允许在 search forms, comment forms, comment lists, gallery, caption and widgets 等里，使用 html5 标记。
在 function.php:
$args = array(
    'search-form',
    'comment-form',
    'comment-list',
    'gallery',
    'caption',
    'widgets'
);
add_theme_support( 'html5', $args );

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