app/views/devise/sessions/new.html.erb
<div class="content background-grey">
<div class="row">
<%= form_for resource, as: resource_name, url: session_path(resource_name), html: { class: 'panel' }, validate: true do |f| %>
<fieldset>
<div class="panel-body">
<h3>Log In</h3>
<%= render "shared/error_messages", target: resource %>
<%= f.text_field :email, placeholder: 'Email address' %>
<%= f.password_field :password, placeholder: 'Password' %>
<fieldset class="checkbox">
<div>
<%= f.check_box :remember_me %>
<%= f.label :remember_me %>
</div>
</fieldset>
<%= f.button 'Log In', type: 'submit', class: 'btn btn-primary btn-login' %>
<a id="login-issues" href="#">Can't log in?</a>
<ul id="login-help">
<li><%= link_to "Forgot your password?", new_password_path(resource_name) %></li>
<li><%= link_to "Account locked?", new_unlock_path(resource_name) %></li>
<li><%= link_to "Resend account confirmation", new_confirmation_path(resource_name) %></li>
</ul>
</div>
<div class="panel-footer">
</div>
</fieldset>
<% end %>
</div>
</div>