/* Valikko ylhäällä - sininen teema */
body { margin: 0; font-family: Arial, sans-serif; background: #e8f1fb; color: #1b2a3a; }

nav { background: #1e6fd9; overflow: hidden; }
nav a { float: left; color: white; padding: 14px 22px; text-decoration: none; }
nav a:hover { background: #0f4fa8; }

.sisalto { padding: 20px; }
h1, h2 { color: #1e6fd9; }

button { background: #1e6fd9; color: white; border: none; border-radius: 6px; padding: 10px 18px; margin: 4px 2px; font-size: 16px; cursor: pointer; }
button:hover { background: #0f4fa8; }