new.html.erb

<div class="form-page">

  <h1>Sign up</h1>

  <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name), :html => { :class => 'form-horizontal' }) do |f| %>

    <%= devise_error_messages! %>

    <div class="control-group">
      <%= f.label :name, :class => 'control-label' %>
      <div class="controls">
        <%= f.text_field :name, :class => 'text_field' %>
      </div>
    </div>

    <div class="control-group">
      <%= f.label :email, :class => 'control-label' %>
      <div class="controls">
        <%= f.text_field :email, :class => 'text_field' %>
      </div>
    </div>

    <div class="control-group">
      <%= f.label :password, :class => 'control-label' %>
      <div class="controls">
        <%= f.password_field :password, :class => 'password_field' %>
      </div>
    </div>
    <div class="control-group">
      <%= f.label :password_confirmation, :class => 'control-label' %>
      <div class="controls">
        <%= f.password_field :password_confirmation, :class => 'password_field' %>
      </div>
    </div>

    <div class="form-actions">
      <%= f.submit nil, :class => 'btn btn-primary' %>
    </div>

  <% end %>

</div>