.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 20px;
  text-align: center;
}

h1 {
  margin-top: 0;
}

label {
  display: block;
  margin-bottom: 10px;
}

input[type="number"] {
  width: 100px;
	padding: 5px;
  margin-bottom: 10px;
}

.toggle {
  display: inline-block;
  margin-bottom: 10px;
}

.toggle input[type="radio"] {
  display: none;
}

.toggle label {
  display: inline-block;
  padding: 5px 10px;
  background-color: #ddd;
  border-radius: 3px;
  cursor: pointer;
}

.toggle input[type="radio"]:checked + label {
  background-color: #4caf50;
  color: #fff;
}

button {
	margin-top: 10px;
  margin-bottom: 20px;
  display: block;
  margin: 0 auto;
  padding: 10px;
  background-color: #4caf50;
  color: #fff;
  border: none;
  cursor: pointer;
}

.result {
  margin-top: 20px;
  font-size: 1.2rem;
}