body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 50px;
}

input {
  width: 100px;
  padding: 8px;
  margin: 5px;
}

button {
  padding: 8px 15px;
  margin: 5px;
  cursor: pointer;
}

button:hover {
  background-color: red;
}

#result {
  margin-top: 15px;
  font-size: 18px;
  font-weight: bold;
}