body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin-top: 100px;
  transition: background-color 0.3s ease;
}

h1 {
  font-size: 48px;
  margin-bottom: 20px;
}

#flicker {
  font-size: 28px;
  transition: color 0.3s ease, visibility 0.3s ease;
  color: #333;
}