app/views/devise/unlocks/new.html.erb
<div class="content background-grey">
<div class="row">
<%= form_for resource, as: resource_name, url: unlock_path(resource_name), html: { class: 'panel', method: :post } do |f| %>
<fieldset>
<div class="panel-body">
<h3>Unlock your account</h3>
<%= render "shared/error_messages", :target => resource %>
<%= f.text_field :email, placeholder: 'Email address' %>
<%= f.button 'Email unlock instructions', type: 'submit', class: 'btn btn-primary btn-login' %>
</div>
</fieldset>
<% end %>
</div>
</div>