anchor.diff:  <h1 style="text-align: center; font: fantasy; font-size: 64px;">twentyfour-seven</h1>
   <h2 style="text-align: center;">コンビニ3社の商品を比較するよ</h2>
   
  -<div style=" width:1030px; margin: 0 auto;">
  -  <div style="width: 100px; height: 500px; float: left; border: 1px solid gray">
  +<div class="container">
  +<div class="row">
  +<div class="col-xs-12 col-md-3">
    <div class="dropdown">
       <!-- デフォルト表示部分 -->
       <a class="btn btn-default dropdown-toggle" id="sample-menu-2" data-toggle="dropdown">
  
positive.code:           <li role="presentation"><a role="menuitem" tabindex="-1" href="#">サラダチキン</a></li>
            <li role="presentation" class="divider"></li>
            <li role="presentation" class="dropdown-header">サラダ</li>
            <li role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
            <li role="presentation" class="divider"></li>
            <li class="disabled" role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
            <li class="disabled" role="presentation"><a role="menuitem" tabindex="-1" href="#">Separated link</a></li>
          </ul>
          <!-- リストここまで -->
  
        </div> 
    </div>
    <table>
      <tr><th>ファミマ</th><th>セブン</th><th>ローソン</th></tr>
      <tr>
  
negative.code:       </td>
      </tr>
    </table>
  </div>
  </div>
  
  <div>
  