body { font-family: Arial, sans-serif; margin:0; padding:0; background:#f5f7f4; color:#333; }
header { background:#2f4f37; padding:20px; color:white; }
nav a { margin:0 10px; color:white; text-decoration:none; }
section { padding:40px; max-width:900px; margin:auto; }
footer { background:#2f4f37; color:white; text-align:center; padding:20px; margin-top:40px;}