body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #0a0a0a;
  color: #e0e0e0;
  padding: 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

h1 {
  color: #00ff00;
}

h2 {
  color: #ffff00;
  margin-top: 30px;
}

.villain-symbol {
  width: 200px;
  display: block;
  margin: 0 auto;
}

input, button {
  padding: 10px;
  margin-top: 10px;
  font-size: 16px;
}

button {
  background-color: #00ff00;
  color: #000;
  border: none;
  cursor: pointer;
}

button:hover {
  background-color: #ffff00;
}

.airplane {
  width: 100px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0); }
}