[Plugin: Woocommerce] Stretch woocommerce shop page

Hi, I have a styling question for woocommerce. I have my shop pages at 90% width. But the products appear only on the left side of the screen. How to make the thumbnails bigger and make it stretch the whole screen?

This is my site: http://www.frameit.in/shop/

I have modified theme style.css to make it 90% wide and I have the following added to functions.php:

/**
* WooCommerce
*
* Unhook sidebar
*/
remove_action( 'woocommerce_sidebar', 'woocommerce_get_sidebar', 10);

/**
* WooCommerce
*
* Unhook/Hook the WooCommerce Wrappers
*/

function responsive_child_theme_setup() {
remove_action('woocommerce_before_main_content', 'responsive_woocommerce_wrapper', 10);
remove_action('woocommerce_after_main_content', 'responsive_woocommerce_wrapper_end', 10);

add_action('woocommerce_before_main_content', 'responsive_child_woocommerce_wrapper', 10);
add_action('woocommerce_after_main_content', 'responsive_child_woocommerce_wrapper_end', 10);

function responsive_child_woocommerce_wrapper() {
echo '<div id="content-woocommerce" class="grid col-40">';
}

function responsive_child_woocommerce_wrapper_end() {
echo '</div><!-- end of #content-woocommerce -->';
}
}

add_action( 'after_setup_theme', 'responsive_child_theme_setup' );

remove_action( 'woocommerce_before_main_content', 'woocommerce_output_content_wrapper', 10);
remove_action( 'woocommerce_after_main_content', 'woocommerce_output_content_wrapper_end', 10);

add_action('woocommerce_before_main_content', 'my_theme_wrapper_start', 10);
add_action('woocommerce_after_main_content', 'my_theme_wrapper_end', 10);

function my_theme_wrapper_start() {
echo '<section id="main">';
}

function my_theme_wrapper_end() {
echo '</section>';
}

add_theme_support( 'woocommerce' );

function remove_loop_button(){
remove_action( 'woocommerce_after_shop_loop_item', 'woocommerce_template_loop_add_to_cart', 10 );
}
add_action('init','remove_loop_button');

/*
* add_filter( 'loop_shop_per_page', create_function( '$cols', 'return 24;' ), 20 );
*/

add_action( 'woocommerce_before_shop_loop', 'woocommerce_catalog_ordering', 20 );
remove_action('woocommerce_pagination', 'woocommerce_catalog_ordering', 20 );

?>