body {
  font-family: sans-serif;
  text-align: center;
  margin-top: 50px;
}

.container {
  display: inline-block;
}

input {
  width: 300px;
  padding: 8px;
  margin-right: 8px;
}

button {
  padding: 8px 16px;
}

#result {
  margin-top: 20px;
}