body {
  font-family: 'Segoe UI', sans-serif;
  background: #f9f9f9;
  color: #333;
  margin: 0;
  padding: 0;
}

header {
  background: linear-gradient(to right, #003366, #006699);
  color: white;
  padding: 2rem;
  text-align: center;
}

section {
  padding: 2rem;
  border-bottom: 1px solid #ccc;
}

h2 {
  color: #003366;
  margin-bottom: 1rem;
}

ul {
  list-style-type: none;
  padding-left: 0;
}

li {
  margin-bottom: 0.5rem;
}

.riddle-box {
  background: #fff;
  border: 1px solid #ddd;
  padding: 1rem;
  margin-bottom: 1rem;
  border-radius: 8px;
}

.riddle {
  font-weight: bold;
}

button {
  background-color: #006699;
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  margin-top: 0.5rem;
  cursor: pointer;
  border-radius: 4px;
}

button:hover {
  background-color: #004466;
}

.answer {
  margin-top: 0.5rem;
  font-style: italic;
}

.hidden {
  display: none;
}

footer {
  background: #003366;
  color: white;
  text-align: center;
  padding: 1rem;
}