diff --git a/resize-observer-1/Overview.bs b/resize-observer-1/Overview.bs
index 2dfacb0bedeb..cd06c15a50a3 100644
--- a/resize-observer-1/Overview.bs
+++ b/resize-observer-1/Overview.bs
@@ -294,11 +294,12 @@ A future version of this spec will extend the returned sequences to contain the
 <h2 id="processing-model">Processing Model</h2>
 
 <h3 id="resize-observation-interface">ResizeObservation example struct</h3>
-<p class="note">This section is not normative. ResizeObservation is an example struct that can be used in implementation of Resize Observer. It is being
+
+<p class="note">This section is non-normative. ResizeObservation is an example struct that can be used in implementation of Resize Observer. It is being
 included here in order to help provide clarity during the processing model. It effectively holds observation information for a single {{Element}}. This
 interface is not visible to Javascript.</p>
 
-<pre class="idl">
+<pre class="idl exclude">
 [Constructor(Element target)
 ]
 interface ResizeObservation {