examples/resizable-demo/index.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Blockly Demo: Resizable Blockly (Part 1)</title>
  <style>
    html, body {
      height: 100%;
      margin: 0;
    }
    body {
      background-color: #fff;
      font-family: sans-serif;
      overflow: hidden;
    }
    h1 {
      font-weight: normal;
      font-size: 140%;
    }
    table {
      height: 100%;
      width: 100%;
    }
    #blocklyArea {
      height: 99%;
      background: #fc9;
      text-align: center;
    }
  </style>
</head>
<body>
  <table>
    <tr>
      <td>
        <p>The first step in creating a resizable Blockly workspace is to use
        CSS or tables to create an area for it.
        Next, <a href="overlay.html">inject Blockly</a> over that area.</p>

        <p>&rarr; More info on <a href="https://developers.google.com/blockly/guides/configure/web/resizable">injecting resizable Blockly</a>&hellip;</p>
      </td>
    </tr>
    <tr>
      <td id="blocklyArea">
        Blockly will be positioned here.
      </td>
    </tr>
  </table>
</body>
</html>