title: How to load a css file in bundle for some specified url in wkwebview?
body: <p>I have a <code>WKWebView</code>. The webpage load most of its css file from CDN. But, there is this frequently-used large css file that I'd like to put it in the app Bundle so that webview load faster. Does anyone know how to load from bundle?</p>
  <p>A simple example. A webpage page needs to load a file at <code>https://cdn.example.com/styles.css</code>. Instead of loading it from file servers, I want to redirect the request (<code>https://cdn.example.com/styles.css</code>) so that it can response with the content <code>styles.css</code> in the bundle, or even from disk cache.</p>
  <p><strong>I don't want to insert css file. I wanna redirect some css files request to my local file url instead.</strong></p>
  <p>A Swift version will be great.</p>
  <p>Thank you.</p>