new.html.erb

<h2>Log In</h2>

<%= form_tag sessions_path do %>
  <div class="field">
    <%= label_tag :user_name %><br>
    <%= text_field_tag :user_name, params['user_name'] %>
  </div>
  <p></p>
  <div class="field">
    <%= label_tag :password %><br/>
    <%= password_field_tag :password %>
  </div>
  <p></p>
  <div class="field">
    <%= check_box_tag :remember_me %>
    <%= label_tag "Remember me?" %>
  </div>
  <p></p>
  <div class="actions"><%= submit_tag "Log in" %></div>
<% end %>
<p></p>