app/views/contacts/_form.html.erb
<%= semantic_form_for [@contact.customer, @contact], :html => {:class => "well"} do |f| %>
<%= render 'shared/error_messages', object: f.object %>
<fieldset>
<legend><%= title %></legend>
<div class="row">
<div class="span8 offset2">
<div class="control-group">
<%= f.label :name %>
<div class="control">
<%= f.text_field :name %>
</div>
</div>
<div class="control-group">
<%= f.input :department %>
</div>
<div class="control-group">
<%= f.label :business_function %>
<div class="control">
<%= f.text_field :business_function %>
</div>
</div>
<div class="control-group">
<%= f.label :phone %>
<div class="control">
<%= f.text_field :phone %>
</div>
</div>
<div class="control-group">
<%= f.label :cell %>
<div class="control">
<%= f.text_field :cell %>
</div>
</div>
<div class="control-group">
<%= f.label :birthday %>
<div class="control">
<%= f.text_field :birthday %>
</div>
</div>
<%= f.submit class: "btn btn-large btn-primary" %>
</div>
</div>
</fieldset>
<% end %>