body {
  background: #0f172a;
  color: white;
  font-family: Arial, sans-serif;
  text-align: center;
}

header {
  padding: 20px;
}

.menu {
  display: grid;
  gap: 15px;
  max-width: 300px;
  margin: auto;
}

.menu a {
  text-decoration: none;
  background: #1e293b;
  padding: 15px;
  border-radius: 10px;
  color: #38bdf8;
  font-weight: bold;
}

.menu a:hover {
  background: #334155;
}