Add better see also cross links

files/en-us/web/http/headers/dpr/index.html

@@ -68,9 +68,20 @@ <h2 id="Browser_compatibility">Browser compatibility</h2>
 
 <p>{{Compat}}</p>
 
+
 <h2 id="See_also">See also</h2>
 
 <ul>
+ <li><a href="https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/client-hints">Adapting to Users with Client Hints</a> (developer.google.com)</li>
+ <li>Device client hints
+ <ul>
+ <li>{{HTTPHeader("Device-Memory")}}</li>
+ <li>{{HTTPHeader("Viewport-Width")}}</li>
+ <li>{{HTTPHeader("Width")}}</li>
+ </ul>
+ </li>
  <li>{{HTTPHeader("Accept-CH")}}</li>
- <li>{{HTTPHeader("Vary")}}</li>
+ <li><a href="/en-US/docs/Web/HTTP/Caching#varying_responses">HTTP Caching > Varying responses</a> and {{HTTPHeader("Vary")}}</li>
 </ul>
+
+