An action to grab on to if another Jetpack Module would like to add its own controls.

Filter the ID of the post where Custom CSS is stored, before the ID is retrieved.If the callback function returns a non-null value, then post_id() will immediately return that value, instead of retrieving the normal post ID.

Filter the theme’s stylesheet URL.

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

Fires after parsing the css.

Fires before optimizing the Custom CSS subvalue.

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

Fires after creating the in the element for the custom css stylesheet.

Allow inserting CSS inline instead of through a separate file.

Filter the default blank Custom CSS URL.