adding new css resource

mattmakai · mattmakai · commit 049ce9884818 · 2019-11-25T07:18:00.000-05:00
diff --git a/content/pages/04-web-development/17-css.markdown b/content/pages/04-web-development/17-css.markdown
@@ -156,6 +156,11 @@ web application's design.
 * [Can I Use...](http://caniuse.com/) is a compatibility table that shows
   which versions of browsers implement specific CSS features.
 
+* [How do you remove unused CSS from a site?](https://css-tricks.com/how-do-you-remove-unused-css-from-a-site/)
+  covers tools for identifying unnecessary CSS and the process for eliminating
+  rules that are overwritten by other rules and therefore do not need to
+  be sent to the client.
+
 * The [Web Design Museum](https://www.webdesignmuseum.org/) is an amazing
   look back at how web design has evolved over the past 25+ years. Some of 
   the designs can still be seen in their current site's presentation such
diff --git a/theme/templates/table-of-contents.html b/theme/templates/table-of-contents.html
@@ -76,7 +76,8 @@ <h4 class="bp">django.db.models
 <h4 class="bp"><a href="/django-dispatch-dispatcher-signal-examples.html">django.dispatch.dispatcher Signal</a></h4>
 <h4 class="bp"><a href="/django-forms-examples.html">django.forms</a>
  <a href="/django-forms-booleanfield-examples.html">BooleanField</a>, 
- <a href="/django-forms-charfield-examples.html">CharField</a>
+ <a href="/django-forms-charfield-examples.html">CharField</a>,
+ <a href="/django-forms-choicefield-examples.html">ChoiceField</a>
 </h4>
 <h4 class="bp">django.http
  <a href="/django-http-httpresponse-examples.html">HttpResponse</a>
