index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.4.0/p5.js"></script>
    <script src="http://cdnjs.cloudflare.com/ajax/libs/p5.js/0.5.6/addons/p5.dom.js"></script>
    <script src="sketch.js"></script>
    <link rel="stylesheet" type="text/css" href="styles.css" />
    <title>Draw</title>
  </head>
  <body class="wrapper">
    <section class="inputs">
      <div id="strokeSlider">
        <label for="strokeSliderID">brush thickness</label>
      </div>
      <div id="strokeColor">
        <label for="strokeColor">brush color</label>
      </div>
    </section>
    <section>
      <div id="canvas"></div>
    </section>
  </body>
</html>