anchor.diff:  
       <article class="article-block">
         <div class="article-contents">
  -        <h2 class="header">Future</h2>
  +        <h6 class="header">Future</h6>
           <p>Exercism is still a prototype, and we are always experimenting with the basic feature set. The goal is to develop a V1 of the product from scratch using everything that we've learned building and using the prototype.</p>
           <p>The V1 will be built using well-known frameworks and conventions to minimize the barrier to contributing.</p>
         </div>
  
positive.code:   <section class="page-header">
      <h1>About</h1>
    </section>
    <section class="main">
      <article class="article-block">
        <div class="article-contents">
          <h2 class="header">Languages</h2>
          <p>
          Exercises are currently available in <%= languages %>.
            Coming Up: Java, Rust, Erlang, PHP, C, and Common Lisp.
          </p>
        </div>
      </article>
  
negative.code: 
      <article class="article-block">
        <div class="article-contents">
          <h6 class="header">Open Source</h6>
          <p>Exercism.io is free and Open Source.</p>
          <p>
          The <a href="https://github.com/exercism/exercism.io" target="blank">website prototype</a> is written in Ruby using the Sinatra web framework. It is licensed under the GNU Affero General Public License.
          </p>
          <p>
          The <a href="https://github.com/exercism/cli" target="blank">command-line client</a> is written in Go, with the MIT license.
          </p>
          <p>An overwhelmingly large number of people have <a href="https://github.com/exercism/exercism.io/graphs/contributors" target="blank">contributed to the codebase</a>.
          </p>
  