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I'm developing a custom theme. For some reason, some of the styles I define globally in the front-end (like certain styles for headings and such) are affecting the back-end.

I am using the WP-LESS plugin and enqueueing the main stylesheet in the theme's functions.PHP:

wp_enqueue_style( 'mainLESS', get_template_directory_uri() . '/less/index.less');

Is this normal behaviour?

How should I prefix styles to keep them from applying to the backend? I don't seem to be seeing any obvious body classes I could take advantage of.

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  • How did you add the styles to your theme? Like the code please :) – kraftner Jul 14 '17 at 12:37
  • ^- what he said. You could make use of is_admin() to not enqueue the style or (body:not(.wp-admin) which seems like an overkill) – kero Jul 14 '17 at 12:39
  • @kraftner, kero - I am using WP-Less and doing wp_enqueue_style( 'mainLESS', get_template_directory_uri() . '/less/index.less'); in the theme's functions.php. Could that be the culprit? – Pekka Jul 14 '17 at 12:50
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    @Pekka웃 This is the way to do it, look how twentysixteen is enqueing styles. Most are always enqueued and some only for specific pages. I guess the question is what CSS are you writing that changes the backend as well? Btw, if you have specific styles for the wp-admin, you'd usually use admin_enqueue_scripts – kero Jul 14 '17 at 12:55
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    What hook are you in when you enqueue them? Probably init or so, but not wp_enqueue_scripts? – kero Jul 14 '17 at 12:56
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You're supposed to enqueue on the wp_enqueue_scripts event. Placing the function in functions.php and immediately running it, will make it run on all pages, including the admin area

Here's an example from the devhub:

/**
 * Proper way to enqueue scripts and styles.
 */
function wpdocs_theme_name_scripts() {
    wp_enqueue_style( 'style-name', get_stylesheet_uri() );
    wp_enqueue_script( 'script-name', get_template_directory_uri() . '/js/example.js', array(), '1.0.0', true );
}
add_action( 'wp_enqueue_scripts', 'wpdocs_theme_name_scripts' );

This hook/action/event fires on the frontend. If you would like to add a style or script to the backend, use the admin_enqueue_scripts event instead

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