body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #fafafa; }
header { background: #4b3d8f; color: white; padding: 20px; text-align: center; }
nav a { margin: 0 10px; color: white; text-decoration: none; }
footer { background: #2e265a; color: white; padding: 20px; text-align: center; }
.container { width: 90%; max-width: 900px; margin: 20px auto; }