title: Enable HTTP2 in Local IIS for CSS Preload
body: <p>I am analyzing my E-Commerce website with Lighthouse Dev tool in Chrome. It suggests me to Preload some CSS files as to Eliminate Render-blocking resources.</p>
  <p>Why is to link CSS using below code:</p>
  <p><code>&lt;link rel=&quot;preload&quot; as=&quot;style&quot; href=&quot;Styles/site.css&quot; /&gt;</code></p>
  <p>instead of using:</p>
  <p><code>&lt;link rel=&quot;stylesheet&quot; href=&quot;Styles/site.css&quot; /&gt;</code></p>
  <p>But when i update my code, page doesn't load and i get a warning in the console:</p>
  <p>The resource <strong>http://..../Styles/site.css</strong> was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate 'as' value and it is preloaded intentionally.</p>