body {
  font-family: sans-serif;
  padding: 2rem;
  background: #f8f8f8;
}
.container {
  max-width: 600px;
  margin: auto;
}
textarea {
  width: 100%;
  height: 100px;
  font-size: 1.2rem;
  padding: 0.5rem;
  margin-bottom: 1rem;
}
.output {
  background: #fff;
  padding: 1rem;
  min-height: 60px;
  border: 1px solid #ccc;
  font-size: 1.2rem;
  white-space: pre-wrap;
}