Filters the CSS classes for the body tag in the admin.

Description

This filter differs from the ‘post_class’ and ‘body_class’ filters in two important ways:

1. $classes is a space-separated string of class names instead of an array.
2. Not all core admin classes are filterable, notably: wp-admin, wp-core-ui, and no-js cannot be removed.

Parameters

$classesstring

Space-separated list of CSS classes.

Source

$admin_body_classes = apply_filters( 'admin_body_class', '' );

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