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if( ! function_exists( 'avia_accessibility_body_class' ) )
{
	/**
	 * Add accessibility conformance classes to body to alter stylings without breaking existing sites
	 * e.g. line-height is required to be larger than in theme settings
	 *
	 * @since 4.8.8
	 * @param array $classes
	 * @return array
	 */
	function avia_accessibility_body_class( array $classes )
	{
		switch( avia_get_option( 'accessibility_conformance_option' ) )
		{
			case 'a_level':
				$classes[] = 'av-accessibility-a';
				break;
			case 'aa_level':
				$classes[] = 'av-accessibility-a av-accessibility-aa';
				break;
			case 'aaa_level':
				$classes[] = 'av-accessibility-a av-accessibility-aa av-accessibility-aaa';
				break;
		}

		return $classes;
	}

	add_filter( 'body_class', 'avia_accessibility_body_class' );
}