Use built-in youtube shortcode for YouTube links

Signed-off-by: lucperkins <[email protected]>

Author: lucperkins

assets/sass/helpers.sass

@@ -32,7 +32,8 @@
   padding-bottom: 7.5rem
 
 .toc
-  position: fixed
+  top: $navbar-height + 2rem
+  position: sticky
   border-left: 3px solid $primary
   padding: 1.5rem 0 1.5rem 2rem
 

content/videos.md

@@ -6,21 +6,14 @@ The following are sample videos of presentations that have been given by
 project members and adopters.
 
 
-**Talking TUF: Securing Software Distribution**
+## Talking TUF: Securing Software Distribution
 
-<a href="https://www.youtube.com/watch?feature=player_embedded&v=Aryr0O6H_2U
-" target="_blank"><img src="https://img.youtube.com/vi/Aryr0O6H_2U/0.jpg"
-alt="Talking TUF" width="240" height="180" /></a>
+{{< youtube "Aryr0O6H_2U" >}}
 
-**Securing the Software Supply Chain with TUF and Docker**
+## Securing the Software Supply Chain with TUF and Docker
 
-<a href="https://www.youtube.com/watch?feature=player_embedded&v=SNge7-t4JRE
-" target="_blank"><img src="https://img.youtube.com/vi/SNge7-t4JRE/0.jpg"
-alt="TUF and Docker" width="240" height="180" /></a>
+{{< youtube "SNge7-t4JRE" >}}
 
-**Atlassian Dev Den Tech Talk Series: Securing Rubygems with TUF**
-
-<a href="https://www.youtube.com/watch?feature=player_embedded&v=J0GkcToeDiM
-" target="_blank"><img src="https://img.youtube.com/vi/J0GkcToeDiM/0.jpg"
-alt="Rubygems" width="240" height="180" /></a>
+## Atlassian Dev Den Tech Talk Series: Securing Rubygems with TUF
 
+{{< youtube "J0GkcToeDiM" >}}