ED Snipped

Grid Generation

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

	// Attributes
	$atts = shortcode_atts(
		array(
			'classes' => '',
			'background_image' => '',
		),
		$atts,
		'grid_box'
	);

	return '<div class="' . esc_attr($a['classes']) . '" style="' . esc_attr($a['background_image']) . '">' . $content . '</div>';

}
add_shortcode( 'grid_box', 'grid_box_maker' );