<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Countries chart</title>
  <link rel="stylesheet" type="text/css" href="main.css">
</head>
<body>
  <h1>Countries chart</h1>
  <p>
    <input id="slider" type="range">
  </p>
  <div id="chart"></div>

  <p class="source">Data courtesy of Gapminder.org</p>
  <script type="text/javascript" src="d3.min.js"></script>
  <script type="text/javascript" src="main.js"></script>
  </body>
</html>