body {
  font-family: Arial, sans-serif;
  background: #f0f8ff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #fff;
  padding: 2em;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
  text-align: center;
  width: 400px;
}

h1 {
  margin-bottom: 20px;
  color: #2c3e50;
}

.btn-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

button {
  padding: 10px;
  border: none;
  border-radius: 5px;
  font-size: 1em;
  cursor: pointer;
}

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

.next-btn {
  margin-top: 20px;
  display: none;
  background-color: #3498db;
  color: white;
}