app/views/extranet/application/_header.html.erb
<header class="header">
<div class="container">
<%= render_breadcrumbs builder: Osuny::BreadcrumbsOnRailsBuilder if breadcrumbs.any? %>
<% if content_for(:header).present? %>
<%= yield :header %>
<% else %>
<h1><%= yield :title %></h1>
<div class="header__additional_data">
<% if content_for(:header_right).present? %>
<%= yield :header_right %>
<% else %>
<% end %>
</div>
<% end %>
</div>
</header>