body{color:#333;background-color:#f9f9f9;max-width:800px;margin:0 auto;padding:20px;font-family:Arial,sans-serif;line-height:1.6}h1{color:#2c3e50;text-align:center;border-bottom:2px solid #3498db;margin-bottom:30px;padding-bottom:10px}h2{color:#2980b9;margin-top:25px}.container{background-color:#fff;border-radius:8px;padding:30px;box-shadow:0 0 15px rgba(0,0,0,.1)}.contact-info{background-color:#e8f4fc;border-left:4px solid #3498db;border-radius:4px;margin:20px 0;padding:15px}.date{text-align:right;color:#7f8c8d;margin-top:30px;font-style:italic}@media (max-width:768px){body{padding:10px}.container{padding:15px}}