WooCommerce – Sales and featured Product view

Hello,

im currently building a shop.

My Question:
How can i make the Products strech out across the page. Like “neueste Produkte” at the bottom
WoCommerce settings shows 3 Columns
my short codes are:
[featured_products per_page=”3″ columns=”3″] (in Garmin Sportprodukte) and [sale_products per_page=”3″ columns=”3″] (in Produkte im Angebot)

i implement this code into the functions.php

add_action('wp_head','avia_change_column_count');
function avia_change_column_count(){
global $avia_config, $woocommerce_loop;
if(is_shop() || is_product_category()){
$woocommerce_loop['columns'] = $avia_config['shop_overview_column'];
}else{
$avia_config['shop_overview_column'] = $woocommerce_loop['columns'];
}
remove_filter( 'loop_shop_columns', 'avia_woocommerce_loop_columns');
add_filter( 'loop_shop_columns', 'avia_woocommerce_loop_columns_custom');
}

function avia_woocommerce_loop_columns_custom($count)
{
	global $avia_config;
	if(is_shop() || is_product_category()) return $avia_config['shop_overview_column'];
	return $count;
}