Spree commerce and styling menu CSS

Rails
1

Hi. I making a shop on spree e-commerce, and I have problem with style
menu CSS. http://ns383595.ovh.net/test/menu.png . How can I edit CSS
file on spree to have manu like in My template like this
http://rafal-serwer.gogler.eu/intimiti/index.html

The code responsible for displaying the menu is:

<% get_taxonomies.each do |taxonomy| %>
<%= t(:shop_by_taxonomy, :taxonomy => taxonomy.name.singularize) %>
<%= taxons_tree(taxonomy.root, @taxon, Spree::Config[:max_level_in_taxons_menu] || 1) %> <% end %>