仅需以下CSS代码放在wp-admin/admin-header.php文件中的
嵌套中，注意添加style标签。仅最后两个为class，其他均为id。wp-admin-bar-site-name{display:none;}
wp-admin-bar-updates{display:none;}
wp-admin-bar-comments{display:none;}
wp-admin-bar-new-content{display:none;}
wp-admin-bar-my-account.with-avatar > a img{display:none!important;}
wpfooter{display:none;}
dashboard_quick_press{display:none;}
postbox-container-2{display:none;}
postbox-container-3{display:none;}
wp-submenu{min-width:60px!important;}
wrap h1{display:none;}