我想那是#wp-admin-bar. 至少在Wordpress 3.3.1和BP 1.5.4上

您需要修改cssposition:fixed 到position:absolute 对于#wpadminbar:

#wpadminbar {
    position: absolute;
}

//hook the header output to make the BuddyBar fix and scroll with the page
add_action(\'wp_head\', \'azizur_buddybar_scrolled\');

function azizur_buddybar_scrolled() {
    echo \'<style type="text/css">#wpadminbar {position: absolute;}</style>\';
}