body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;margin:0;padding:0;background-color:#f4f7f9;color:#333}h1,h2,h3,h4{color:#007bff}p{line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}