angular/aio/content/examples/template-reference-variables/src/app/app.component.css

h3 {
  font-weight: 700;
}

pre, .wrapper {
  background-color: rgb(240, 250, 250);
  padding: 1rem;
  border: 1px solid #444;
}

input {
  margin: .5rem;
  padding: .5rem;
}