1<div id="center">
2 <div id="main"></div>
3 <div class="row" id="r-one">
4 <span class="sq" id="sq-1"></span>
5 <span class="sq" id="sq-2"></span>
6 <span class="sq" id="sq-3"></span>
7 </div>
8 <div class="row" id="r-two">
9 <span class="sq" id="sq-4"></span>
10 <span class="sq" id="sq-5"></span>
11 <span class="sq" id="sq-6"></span>
12 </div>
13 <div class="row" id="r-three">
14 <span class="sq" id="sq-7"></span>
15 <span class="sq" id="sq-8"></span>
16 <span class="sq" id="sq-9"></span>
17 </div>
18 <div class="row" id="r-four">
19 <span class="sq" id="sq-10"></span>
20 <span class="sq" id="sq-11"></span>
21 <span class="sq" id="sq-12"></span>
22 </div>
23</div>