diff --git a/_includes/right.html b/_includes/right.html
index 6d7517af900..87d55663843 100644
--- a/_includes/right.html
+++ b/_includes/right.html
@@ -8,11 +8,11 @@
 {% endif %}
 {% endcapture %}
 
-{% capture additional %}
+{% capture sidebar %}
 {% if site.sample %}
-{% include samples/additional.md %}
+{% include samples/sidebar.md %}
 {% else %}
-{% include additional.md %}
+{% include sidebar.md %}
 {% endif %}
 {% endcapture %}
 
@@ -24,8 +24,8 @@
 </div>
 {%endunless%}
 
-{%unless additional contains 'not found in _includes directory' %}
-<div class="right-pane-widget--container no-top-border project-additional-resource--wrapper">
-{{ additional | markdownify }}
+{%unless sidebar contains 'not found in _includes directory' %}
+<div class="right-pane-widget--container no-top-border project-sidebar-resource--wrapper">
+{{ sidebar | markdownify }}
 </div>
 {%endunless%}
diff --git a/_includes/samples/additional.md b/_includes/samples/sidebar.md
similarity index 100%
rename from _includes/samples/additional.md
rename to _includes/samples/sidebar.md
diff --git a/css/projects.css.css b/css/projects.css.css
index 10a81cd0f78..d0444609d78 100644
--- a/css/projects.css.css
+++ b/css/projects.css.css
@@ -220,7 +220,7 @@
   background-color: #34302d;
 }
 .quickstart--container .quickstart--dropdown .project-version--dropdown {
-  width: 100%%;
+  width: 100%;
   padding: 0;
 }
 .quickstart--container .quickstart--dropdown .project-version--dropdown .project-version {
@@ -315,19 +315,19 @@
   margin-right: 0;
 }
 
-.project-additional-resource--wrapper {
+.project-sidebar-resource--wrapper {
   padding: 20px;
 }
-.project-additional-resource--wrapper h3 {
+.project-sidebar-resource--wrapper h3 {
   margin: 5px 0;
 }
-.project-additional-resource--wrapper ul {
+.project-sidebar-resource--wrapper ul {
   margin: 0 0 25px 0;
 }
-.project-additional-resource--wrapper ul li {
+.project-sidebar-resource--wrapper ul li {
   border: none;
   padding: 5px 0;
 }
-.project-additional-resource--wrapper ul:last-child {
+.project-sidebar-resource--wrapper ul:last-child {
   margin-bottom: 0;
 }