app/views/sessions/new.html.erb
<div class="form-box">
<h1>Sign In</h1>
<%= form_tag(session_path) do %>
<fieldset>
<div class="required">
<%= label_tag :email %>
<%= email_field_tag :email, nil, autofocus: true, size: 40 %>
</div>
<div class="required">
<%= label_tag :password %>
<%= password_field_tag :password, nil, size: 40 %>
</div>
<p>
<%= submit_tag 'Sign In' %>
</p>
</fieldset>
<% end %>
</div> <!-- form-box -->