body margin:0; padding:0; font-family:Arial,Helvetica,sans-serif; background:#f7f7f7; color:#333; line-height:1.8; .container max-width:1100px; margin:30px auto; background:#ffffff; padding:35px; border-radius:8px; box-shadow:0 2px 10px rgba(0,0,0,.08); h1,h2,h3 color:#1f4b7a; margin-to