body {
  font-family: "Helvetica", "Arial", sans-serif;
  margin: 40px;
  background: #f8f9fa;
  color: #333;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 300px;
}

input {
  width: 100%;
  padding: 5px;
}

button {
  padding: 10px;
  background-color: #0078d7;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background-color: #005fa3;
}

#result {
  margin-top: 15px;
  font-weight: bold;
}