diff --git a/source b/source
index e93a43595c4..9a9e072ce0f 100644
--- a/source
+++ b/source
@@ -38,7 +38,7 @@
   <link w-nosnap w-noreview rel="icon" crossorigin href="https://resources.whatwg.org/logo.svg">
   <link w-nohtml w-nodev rel="icon" crossorigin href="https://resources.whatwg.org/logo-snapshot.svg">
   <link w-dev rel="stylesheet" crossorigin href="/dev/styles.css">
-  <link w-nodev rel="stylesheet" crossorigin href="/styles.css">
+  <link w-nodev rel="stylesheet" crossorigin href="https://html.spec.whatwg.org/styles.css">
   <script>
    function toggleStatus(div) {
      div.parentNode.classList.toggle('wrapped');
@@ -59,8 +59,9 @@
  </head>
  <body>
   <script w-dev src="/dev/search.js" async></script>
+  <!-- PR Preview special cases /html-dfn.js. -->
   <script w-nodev w-noreview crossorigin src="/html-dfn.js" defer></script>
-  <script w-nodev w-noreview crossorigin src="/var-click-highlighting.js" defer></script>
+  <script w-nodev w-noreview crossorigin src="https://html.spec.whatwg.org/var-click-highlighting.js" defer></script>
   <script w-nodev w-noreview w-nosplit crossorigin src="https://resources.whatwg.org/commit-snapshot-shortcut-key.js" defer></script>
   <header class="head with-buttons" id="head">
    <a href="https://whatwg.org/" class="logo"><img crossorigin width="100" height="100" alt="WHATWG" src="https://resources.whatwg.org/logo.svg" class="darkmode-aware"></a>
