body { font-family: Arial; margin:0; background:#f4f7fc; }
header { text-align:center; padding:40px; background:#0b1f3a; color:white; }
.logo { width:120px; }
.content { padding:30px; max-width:800px; margin:auto; }
footer { text-align:center; padding:20px; background:#0b1f3a; color:white; margin-top:40px; }