Change Accessibility Toolbar Attachment Element
/**
* By default, the A11y toolbar is attached to the body element. Use this filter to attach to some other element.
*
* @param string default attachment element: body
*
* @return string HTML selector string valid for use in jQuery
*/
function my_toolbar_location( $selector ) {
return '#content'; // attach to your theme's #content div.
}
add_filter( 'wpa_move_toolbar', 'my_toolbar_location' );