Add ID attribute to Genesis HTML5 Markup

add_ID_attribute_to_main_element_genesis

// https://www.itnota.com/adding-id-attribute-genesis-main-content/
//
// Adds consideration for high level error reporting

// Add id="content" attributes to <main> element
add_filter( 'genesis_attr_content', 'my_attr_content' );

function my_attr_content( $attr ) {

	if( array_key_exists( 'id', $attr ) {
		$attr['id' .= 'content';
	} else {
		$attr['id'] = 'content';
	}
	return $attr;

}