body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: #333;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f9f9f9;
        }
        h1, h2 {
            color: #2c3e50;
            border-bottom: 2px solid #ecf0f1;
            padding-bottom: 10px;
        }
        .container {
            background-color: #ffffff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        strong {
            color: #2980b9;
        }