anchor.diff:        <div class="span5">
           <h2>Keyboard shoutcuts</h2>
         </div>
  -      <div class="span10">
  +      <div class="span7">
           <h3>Navigation</h3>
           <ul class="unstyled">
             <li><strong>j/→:</strong> next item</li>
  
positive.code:       <div class="span5">
          <h2>Developer</h2>
        </div>
        <div class="span10">
          <h3>Created & designed by</h3>
          <dl>
            <dt>Kazuya Takeshima</dt>
  
negative.code:       <div class="span5">
          <h2>About Undersky</h2>
        </div>
        <div class="span7">
          <h3>Instagram viewer for web browser</h3>
          <p></p>
        </div>
  