WordPress 修改后台字体为雅黑

自从谷歌被“无法打开”后，许多朋友说字体变丑很多，实际上只是错觉……（谷歌字体仅作为英文使用）面对千年不变的宋体，我们如何才能将后台全站字体变为雅黑呢？代码来自Meiri.Me博主~

添加至Functions.php：

// 更改后台字体
function Bing_admin_lettering(){
    echo'<style type="text/css">
        * { font-family: "Microsoft YaHei" !important; }
        i, .ab-icon, .mce-close, i.mce-i-aligncenter, i.mce-i-alignjustify, i.mce-i-alignleft, i.mce-i-alignright, i.mce-i-blockquote, i.mce-i-bold, i.mce-i-bullist, i.mce-i-charmap, i.mce-i-forecolor, i.mce-i-fullscreen, i.mce-i-help, i.mce-i-hr, i.mce-i-indent, i.mce-i-italic, i.mce-i-link, i.mce-i-ltr, i.mce-i-numlist, i.mce-i-outdent, i.mce-i-pastetext, i.mce-i-pasteword, i.mce-i-redo, i.mce-i-removeformat, i.mce-i-spellchecker, i.mce-i-strikethrough, i.mce-i-underline, i.mce-i-undo, i.mce-i-unlink, i.mce-i-wp-media-library, i.mce-i-wp_adv, i.mce-i-wp_fullscreen, i.mce-i-wp_help, i.mce-i-wp_more, i.mce-i-wp_page, .qt-fullscreen, .star-rating .star { font-family: dashicons !important; }
        .mce-ico { font-family: tinymce, Arial !important; }
        .fa { font-family: FontAwesome !important; }
        .genericon { font-family: "Genericons" !important; }
        .appearance_page_scte-theme-editor #wpbody *, .ace_editor * { font-family: Monaco, Menlo, "Ubuntu Mono", Consolas, source-code-pro, monospace !important; }
        .post-type-post #advanced-sortables, .post-type-post #autopaging .description { display: none !important; }
        .form-field input, .form-field textarea { width: inherit; border-width: 0; }
        </style>';
}
add_action('admin_head', 'Bing_admin_lettering');