<% if f.object.errors[:base].present? %>
  <div class="col col-sm-12">
    <div class="alert alert-danger fade in">
      <button class="close" data-dismiss="alert">
        ×
      </button>
      <i class="fa-fw fa fa-times"></i>
        <%= f.object.errors[:base].first %>
    </div>
  </div>
<% end %>