app/views/sessions/new.html.erb
<%= render '/header.html.erb' %>
<h3>Log-In</h3>
<% flash.each do |name, msg| -%>
<%= content_tag :div, msg, class: name %>
<% end -%>
<div class="nice_border">
<%= form_tag sessions_path do %>
<%= label_tag :email %>
<%= text_field_tag :email %>
<%= label_tag :password %>
<%= password_field_tag :password %>
<%= submit_tag ("Log in") %> <%= link_to "Register", users_new_path %>
<% end %>
<%= form_tag sessions_path do %>
<%= hidden_field_tag 'guest', true %>
<%= submit_tag ("Guest access") %>
<% end %>
</div>