在脚本Wordpress之前排队样式

I get some issue when putting .css file into the <head>

The function which I use works great but files added after all the <script> tag and I would like to add them before.

function custom_styles() {
  echo"
    <link rel='stylesheet' href='/css/custom.css' type='text/css' media='all'>
    <link rel='stylesheet' href='/css/screen.css' type='text/css' media='all'>
  ";
}
add_action( 'wp_head', 'custom_styles' 10 );

Any help would be appreciated

It is because wp_head actions defined by user is triggered after the ones defined by wordpress, so your content will be added at the end of <head> tag. You can change the priority of action to value below default ( 10 ) , add_action( 'wp_head', 'custom_styles', 1 );, or you can use more appropriate action wp_enqueue_scripts and method wp_enqueue_style.

add_action( 'wp_enqueue_scripts', function() {
    wp_enqueue_style( 'style-name', get_stylesheet_directory_uri() . '/css/custom.css' );
});

Try below code

function theme_name_scripts() {
    wp_enqueue_style( 'style-name', get_stylesheet_uri() );
    // add js file in html header
    wp_enqueue_script( 'script-name', get_template_directory_uri() . '/js/example.js', array(), '1.0.0', true );
}

add_action( 'wp_enqueue_scripts', 'theme_name_scripts' );

see more example