autotiling

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title>Autotiling</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <style>
        body {
            font-family: Georgia, serif;
            line-height: 1.6;
            color: #333;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px;
        }
        h1 {
            color: #6B46C1;
            border-bottom: 3px solid #6B46C1;
            padding-bottom: 10px;
        }
        h2 {
            color: #553C9A;
            margin-top: 40px;
            border-bottom: 1px solid #E5E7EB;
            padding-bottom: 5px;
        }
        h3 {
            color: #6B46C1;
            margin-top: 30px;
        }
        code {
            background: #F3F4F6;
            padding: 2px 6px;
            border-radius: 3px;
            font-family: 'Courier New', monospace;
            font-size: 0.9em;
        }
        pre {
            background: #F9FAFB;
            border: 1px solid #E5E7EB;
            border-radius: 5px;
            padding: 15px;
            overflow-x: auto;
        }
        pre code {
            background: none;
            padding: 0;
        }
        .interactive-container {
            background: #F9FAFB;
            border: 2px solid #E5E7EB;
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
        }
        .grid-demo {
            display: inline-block;
            background: #fff;
            border: 1px solid #D1D5DB;
            padding: 10px;
            margin: 10px;
            border-radius: 5px;
        }
        canvas {
            border: 1px solid #D1D5DB;
            cursor: pointer;
            display: block;
            margin: 10px auto;
        }
        .controls {
            margin: 15px 0;
            padding: 15px;
            background: #EDE9FE;
           ...