body {
  font-family: sans-serif;
}

h1 {
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

label {
  font-size: 1.2em;
  margin-bottom: 10px;
}

input {
  padding: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
  margin-bottom: 10px;
}

button {
  padding: 5px 10px;
  background-color: #4CAF50;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #3e8e41;
}

#result {
  text-align: center;
  font-size: 1.2em;
  font-weight: bold;
}