<!doctype html>
<html lang="en">
<meta charset="utf-8">
<title>CSS Test Reference</title>
<style>
p {
  font-family: system-ui, sans-serif;
  font-size: 4em;
}
</style>
<p lang="zh">你好 <span lang="es">¡hola!</span> <span lang="ar">سلام</span></p>
