body { font-family: Arial, sans-serif; background: #f6f9fc; color: #1a1f36; margin: 0; padding: 0; }
header { background: #0b5ed7; color: white; padding: 14px; text-align: center; }
nav ul { list-style: none; padding: 0; }
nav ul li { display: inline; margin: 0 10px; }
nav ul li a { color: white; text-decoration: none; }
main { padding: 20px; max-width: 900px; margin: auto; }
img { border-radius: 6px; }
ul { margin-top: 10px; }