body {
            font-family: 'Open Sans', sans-serif;
            line-height: 1.6;
            margin: 20px;
            padding: 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .header {
            text-align: center;
            margin-bottom: 20px;
        }
        h1, h2, h3 {
            color: #333;
        }
        img {
            max-width: 100%;
            height: auto;
        }