body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0f0f0;
  text-align: center;
  padding-top: 50px;
}

.nav-button {
  display: inline-block;
  margin: 10px;
  padding: 10px 300px;
  font-size: 16px;
  background-color: #4CAF50;
  color: white;
  text-decoration: none;
  border-radius: 18px;
  transition: background-color 0.3s ease;
}

.nav-button:hover {
  background-color: #457fa0;
}