yle="width: 200px;">
      <p>背景图cdn域名切换</p>
      <div class="border box"></div>
      <div class="border box2"></div>
    </div>
    <p>img标签cdn域名切换</p>
    <img class="border" src="https://9.unsplash.com/photo-1525480122447-64809d765ec4" alt="">
    <img class="border" src="https://9.unsplash.com/photo-1709727562657-9c1629333d1b" alt="">

  </body>
</html>
