<style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            padding: 20px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        h1 {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .img-container {
            width: 100%;
            margin-bottom: 20px;
        }
        
        .img-responsive {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 0 auto;
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 24px;
            }
        }
    </style>