<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Treemap Demo</title>
    <link rel="stylesheet" href="../charts/demo_charts.css">
    <style>
      .chart {
        max-width: 2000px;
        float: left;
      }
      .title {
        padding: 20px 0;
      }
      .chart-wrapper {
        height: 500px;
      }
      .chart-wrapper h2 {
        border-bottom: 1px solid #333;
      }
      .demos-container {
        clear: both;
      }
      .node {
        border: solid 1px white;
 