index.html

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="style.css">
    <script src="main.js"></script>
    <script src="PixelArt.js"></script>
    <title>Pixel Art</title>
</head>
<body>
    <div class="colors">
        <div id="red"></div>
        <div id="orange"></div>
        <div id="yellow"></div>
        <div id="green"></div>
        <div id="blue"></div>
        <div id="purple"></div>
        <div id="brown"></div>
        <div id="black"></div>
    </div>
    <canvas id="main"></canvas>
    <footer>
        <p>Para cambiar el color, presione la caja con el color correspondiente.</p>
        <p>Barra espaciadora: pintar</p>
        <p>Ctrl: borrar</p>
    </footer>
</body>
</html>