Widen Address Fields in WooCommerce

Add the following code to your child theme functions.php file to make the address field wider:

/**
 * Make the billing address fields wider
 */

function custom_woocommerce_billing_fields( $fields ) {

     $fields['billing_address_1']['class'] = array( 'form-row-wide' );
     $fields['billing_address_2']['class'] = array( 'form-row-wide' );

     return $fields;
}
add_filter('woocommerce_billing_fields', 'custom_woocommerce_billing_fields');