anchor.diff:    </div>
   
     <div class="col s12 m6">
  -    <div class="card blue lighten-3">
  -      <div class="card-content white-text">
  +    <div class="card">
  +      <div class="card-content">
           <div class="card-title">Word variety</div>
  -        <p>
  -          <%= pie_chart({
  -            'Words used multiple times' => analysis.words_used_repeatedly_count,
  -            'Words used exactly once' => analysis.words_used_once_count
  -          }) %>
  -        </p>
           <div id="graph-word-variety"></div>
         </div>
         <div class="card-action">
  
positive.code:   </div>
  
    <div class="col s12 m6">
      <div class="card blue lighten-3">
        <div class="card-content white-text">
          <div class="card-title">Word complexity</div>
          <p>
            <%= pie_chart({
              'Simple words' => analysis.simple_words_count,
              'Complex words' => analysis.complex_words_count
              }) %>
          </p>
        </div>
        <div class="card-action">
          <a class="activator blue-text text-darken-4">
            What are simple/complex words?
          </a>
        </div>
        <div class="card-reveal">
  
negative.code: 
    var word_variety_chart = Highcharts.chart('graph-word-variety', {
      chart: {
          type: 'pie'
      },
      title: {
          text: 'Number of words used...'
      },
      series: [{
          name: 'Words',
          colorByPoint: true,
          data: [{
              name: 'once',
              y: <%= analysis.words_used_once_count %>,
              sliced: true,
              selected: true
          }, {
              name: 'multiple times',
              y: <%= analysis.words_used_repeatedly_count %>
          }]
      }]
    });
  
    var word_complexity_chart = Highcharts.chart('graph-word-complexity', {
      chart: {
          type: 'pie'
      },
      title: {
          text: 'Number of...'
      },
      series: [{
          name: 'Words',
          colorByPoint: true,
          data: [{
              name: 'simple words',
              y: <%= analysis.simple_words_count %>,
              sliced: true,
              selected: true
          }, {
              name: 'complex words',
              y: <%= analysis.complex_words_count %>
          }]
      }]
    });
  
  