body {
  font-family: Arial, sans-serif;
  background: #f4f4f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  width: 300px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

form label {
  display: block;
  margin-top: 10px;
}

form input, form select, form button {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
}

button {
  background: #0078d7;
  color: white;
  border: none;
  margin-top: 15px;
  cursor: pointer;
}

button:hover {
  background: #005fa3;
}

#result {
  margin-top: 20px;
  font-weight: bold;
  text-align: center;
}