body {
            font-family: sans-serif;
            max-width: 600px;
            margin: 40px auto;
            padding: 0 20px;
            line-height: 1.6;
            color: #333;
        }
        .aviso {
            background: #ffebee;
            padding: 15px;
            border-left: 5px solid #d32f2f;
            margin-bottom: 30px;
        }
        article {
            margin-bottom: 40px;
        }
        h1, h2 {
            color: #111;
        }