Fires before optimizing the Custom CSS subvalue.

Fires after parsing the css.

Allows addition of elements to the submit box for custom css on the wp-admin side.

Filter the theme’s stylesheet URL.

Filter the Custom CSS limited width’s support doc URL.

Filter the intro text appearing above the Custom CSS Editor.

Fires right before the custom css page begins.

Filter the Custom CSS preview message JS styling.

Filter the Preview message displayed on the site when previewing custom CSS, before to save it.

Filter the default blank Custom CSS URL.