anchor.diff: -<div>
  +<%= nested_form_for @factura do |f| %>
   <div class="col-md-7">
   	<h6 class="text-muted text-right fecha"></h6>
   	<!-- formulario datos del cliente -->
  -	<%= nested_form_for @factura do |f| %>
   	<% if @factura.errors.any? %>
   	<h2>Errores:</h2>	
   	<ul>
  
positive.code: 		</table>
  	</div>
  </div>
  <div class="col-md-2 col-md-offset-1">
  	<div class="panel panel-default">
  		<div class="panel-heading">
  			<h3 class="panel-title">IMPUESTOS %</h3>
  		</div>
  		<div class="panel-body">
  			<%=  f.hidden_field :tipo, class: "tipo_factura" %>
  			<table>
  				<thead>
  					<th></th>
  
negative.code: 			<tbody>
  				<%= f.fields_for :item_facturas, :wrapper => false do |item_factura| %>
  				<tr class="fields">
  					<%= render 'item_facturas/itemfacturas', item_factura:item_factura %>
  				</tr>
  				<% end %>
  				<tr>
  