body { font-family: Arial, sans-serif; margin: 0; padding: 0; color: #333; }
.site-header { background: #003366; color: #fff; padding: 20px; text-align: center; }
.nav ul { list-style: none; padding: 0; background: #00509e; margin: 0; text-align: center; }
.nav li { display: inline-block; margin: 0 15px; }
.nav a { color: white; text-decoration: none; font-weight: bold; }
.main-content { padding: 40px 20px; }
.site-footer { background: #003366; color: #fff; text-align: center; padding: 10px; }
.button { background: #0077cc; color: white; padding: 10px 20px; text-decoration: none; border-radius: 5px; display: inline-block; margin: 5px; }