给WordPress后台页面添加自定义CSS

add_action('admin_head', 'my_custom_fonts'); // admin_head is a hook my_custom_fonts is a function we are adding it to the hook

function my_custom_fonts() {
echo '<style>
.vi-ui.segment{display:none;}
</style>';
}

/* Add CSS file(s) to admin pages.*/
function admin_style() {

wp_enqueue_style('admin-styles', get_theme_file_uri().'/style.css'); //获取子主题目录下CSS文件
}
add_action('admin_head', 'admin_style');