QR codes in Sinatra

index.erb

<style type="text/css">

table {
  border-width: 0;
  border-style: none;
  border-color: #0000ff;
  border-collapse: collapse;
 }
 
td {
   border-width: 0;
   border-style: none;
   border-color: #0000ff;
   border-collapse: collapse;
   padding: 0;
   margin: 0;
   width: 10px;
   height: 10px;
 }
 
td.black { background-color: #000; }
td.white { background-color: #fff; }

</style>

<table>
 <% @qr.modules.each_index do |x| %>
   <tr>
   <% @qr.modules.each_index do |y| %>
    <% if @qr.dark?(x,y) %>
    <td class="black"/>
    <% else %>
    <td class="white"/>
    <% end %>
   <% end %>
   </tr>
 <% end %>
</table>

qr.rb

require 'sinatra'
require 'rqrcode'

set :views, settings.root

get '/' do
  @qr = RQRCode::QRCode.new('github.com/dejay')
  erb :index
end