diff --git a/rules/S6821/html/rule.adoc b/rules/S6821/html/rule.adoc
index 4bd440f87a..c2365c8f61 100644
--- a/rules/S6821/html/rule.adoc
+++ b/rules/S6821/html/rule.adoc
@@ -1,44 +1,27 @@
-FIXME: add a description
-
-// If you want to factorize the description uncomment the following line and create the file.
-//include::../description.adoc[]
-
 == Why is this an issue?
 
-FIXME: remove the unused optional headers (that are commented out)
+include::../../../shared_content/jsts/aria-intro-1.adoc[]
 
-//=== What is the potential impact?
+This rule checks that when using the `role` property in DOM elements, its value is a valid non-abstract ARIA role.
 
 == How to fix it
-//== How to fix it in FRAMEWORK NAME
 
-=== Code examples
+Check that each element with a defined ARIA role has a valid non-abstract value.
 
-==== Noncompliant code example
-
-[source,text,diff-id=1,diff-type=noncompliant]
+[source,javascript,diff-id=1,diff-type=noncompliant]
 ----
-FIXME
+<div role="meth" aria-label="a^{2} + b^{2} = c^{2}">
+  a<sup>2</sup> + b<sup>2</sup> = c<sup>2</sup>
+</div>
 ----
 
-==== Compliant solution
+To fix the code use a valid value for the ARIA role attribute.
 
-[source,text,diff-id=1,diff-type=compliant]
+[source,javascript,diff-id=1,diff-type=compliant]
 ----
-FIXME
+<div role="math" aria-label="a^{2} + b^{2} = c^{2}">
+  a<sup>2</sup> + b<sup>2</sup> = c<sup>2</sup>
+</div>
 ----
 
-//=== How does this work?
-
-//=== Pitfalls
-
-//=== Going the extra mile
-
-
-//== Resources
-//=== Documentation
-//=== Articles & blog posts
-//=== Conference presentations
-//=== Standards
-//=== External coding guidelines
-//=== Benchmarks
+include::../common/resources/resources.adoc[]
\ No newline at end of file
diff --git a/rules/S6821/javascript/rule.adoc b/rules/S6821/javascript/rule.adoc
index 71f6c09ebf..8da1566cad 100644
--- a/rules/S6821/javascript/rule.adoc
+++ b/rules/S6821/javascript/rule.adoc
@@ -26,12 +26,4 @@ To fix the code use a valid value for the ARIA role attribute.
 </div>
 ----
 
-== Resources
-=== Documentation
-
-* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques[Using ARIA: Roles, states, and properties]
-* MDN web docs - https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles[ARIA roles (Reference)]
-
-=== Standards
-
-* W3C - https://www.w3.org/TR/wai-aria-1.2/[Accessible Rich Internet Applications (WAI-ARIA) 1.2]
+include::../common/resources/resources.adoc[]