index.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Omok</title>
    <link href="style.css" rel="stylesheet" type="text/css" />
  </head>
  <body>
    <div id="left-pane">
      <button id="fullscreen" onclick="toggleFullscreen()"></button>
    </div>
    <table id="grid"></table>
    <div id="right-pane">
    </div>
    <script src="script.js"></script>
  </body>
</html>