anchor.diff:      html.writeln();
   
       // left nav
  -    html.startTag('div', attributes: "class='span3'");
  +    html.startTag('div', attributes: "class='col-md-3'");
       html.startTag('ul', attributes: 'class="nav nav-tabs nav-stacked left-nav"');
       html.startTag('li', attributes: 'class="active"', newLine: false);
       html.write('<a href="${_getFileNameFor(library)}">' '<i class="chevron-nav icon-white icon-chevron-right"></i> ' '${library.name}</a>');
       html.endTag(); // li
       html.endTag(); // ul.nav
  -    html.endTag(); // div.span3
  +    html.endTag(); // div.col-md-3
   
       // main content
  -    html.startTag('div', attributes: "class='span9'");
  +    html.startTag('div', attributes: "class='col-md-9'");
   
       html.tag('h1', contents: library.name);
   
  
positive.code: 
      html.writeln('<hr>');
  
      html.endTag(); // div.span9
  
      html.endTag(); // div.row
  
  
negative.code:       html.writeln();
        html.startTag('div', attributes: "class='row'", newLine: false);
        html.writeln();
        html.startTag('div', attributes: "class='col-md-3'");
        html.startTag('ul', attributes: 'class="nav nav-tabs nav-stacked left-nav"');
        html.startTag('li', attributes: 'class="active"', newLine: false);
        html.write('<a href="${packageName}">' '<i class="chevron-nav icon-white icon-chevron-right"></i> ' '${packageName}-${packageVersion}</a>');
        html.endTag(); //li
        html.endTag(); //ul
        html.endTag();
        html.startTag('div', attributes: "class='col-md-9'");
        html.tag('h1', contents: packageName);
        html.writeln('<hr>');
        html.write(packageDesc);
  