Flexbox shortcode

// Add Shortcode
function flexbox_shortcode( $atts , $content = null ) {

	// Attributes
	$atts = shortcode_atts(
		array(
			'id' => '',
		),
		$atts,
		'flexbox'
	);

	// Return image HTML code
		return '<figure id="' . $atts['id'] . '" class="flex-container">' .  do_shortcode($content) . '</figure>';
	

}
add_shortcode( 'flexbox', 'flexbox_shortcode' );