body{margin:0;font-family:Arial;background:#eef6f3;color:#333}header{background:#2f6f4e;color:#fff;padding:30px;text-align:center}main{max-width:800px;margin:30px auto;padding:0 15px}h2{color:#2f6f4e}footer{background:#ddd;text-align:center;padding:15px;font-size:14px}