app/views/sessions/new.html.erb
<%= form_tag url: login_path do %>
<p>
<%= label_tag 'Email' %><br>
<%= email_field_tag :email %>
</p>
<p>
<%= label_tag 'Password' %><br>
<%= password_field_tag :password %>
</p>
<p>
<%= submit_tag 'Log In' %>
</p>
<% end %>
<%= link_to 'Signup', new_user_path %>