diff --git a/css-content-3/Overview.bs b/css-content-3/Overview.bs
index cc4f7aa8915..9f97908d2da 100644
--- a/css-content-3/Overview.bs
+++ b/css-content-3/Overview.bs
@@ -210,6 +210,19 @@ Inserting and Replacing Content: the 'content' property</h2>
 			the element has no "alt text".
 	</dl>
 
+	<div class="example">
+		To correctly use <<counter>> in "alt text" in unsupported browsers
+		one should specify 'content' property twice.
+		First, a fallback without counter in "alt text".
+		Second, use counter in "alt text".
+		<pre>
+			::before {
+				content: "Chapter" counter(chapter);
+				content: "Chapter" counter(chapter) / "Chapter" counter(chapter);
+			}
+		</pre>
+	</div>
+
 	Issue: Should the contents keyword be replaced with ''content()''?
 
 <h3 id="accessibility">
@@ -1397,4 +1410,4 @@ No new privacy considerations have been reported on this specification.
 
 <h2 class=no-num id=security>Security Considerations</h2>
 
-No new security considerations have been reported on this specification.
\ No newline at end of file
+No new security considerations have been reported on this specification.