<% b = 'top_static_nav' %>

<%= link_to "Главная", "/", class: b + "__index" %> <%= link_to "Контакты", "/contacts", class: b + "__contacts" %> <%= link_to "Заказать звонок", "", class: b + "__call", data: { toggle: "modal", target: ".feed_back_modal_form" } %>