bookstore/app/views/books/shopping_cart.erb

<div class='container'>
  <div class='row'>
    <h6 class='col s2'>Title</h6>
    <h6 class='col s3'>Authors</h6>
    <h6 class='col s1'>Price</h6>
  </div>
  <% @books.each do |book| %>
    <div class='row'>
      <div class='col s2'>
        <%= book.title %>
      </div>

      <div class='col s3'>
        <%= book.authors %>
      </div>

      <div class='col s1'>
        <%= book.price_with_currency %>
      </div>
    </div>
  <% end %>
  <div class='row'>
    <div class='col s5'><strong>Summary</strong></div>
    <div class='col s1'><%= cart_summary %></div>
  </div>
</div>