diff --git a/css-transitions/Overview.bs b/css-transitions/Overview.bs
index 3549f235eb6..a1193c5656b 100644
--- a/css-transitions/Overview.bs
+++ b/css-transitions/Overview.bs
@@ -96,7 +96,15 @@ urlPrefix: https://www.w3.org/TR/css3-color/; type: value;
     text: blue
     text: green
 url: http://w3c.github.io/dom/#constructing-events; type: dfn; text: event constructor;
-url: https://html.spec.whatwg.org/multipage/infrastructure.html#concept-event-dispatch; type: dfn; text: dispatch;
+urlPrefix: https://html.spec.whatwg.org/multipage/webappapis.html; type: dfn; spec: html
+    text: event handlers
+    text: event handler event type
+    text: event handler content attributes
+    text: event handler IDL attributes
+urlPrefix: https://html.spec.whatwg.org/multipage/infrastructure.html; type: dfn; spec: html
+    text: HTML elements
+    text: dispatch; url: concept-event-dispatch
+url: https://html.spec.whatwg.org/#document; type: interface; text: Document; spec: html
 </pre>
 </dl>
 
@@ -1263,6 +1271,33 @@ Completion of transitions {#complete}
         </dd>
       </dl>
 
+Event handlers on elements, <code>Document</code> objects, and <code>Window</code> objects {#event-handlers-on-elements-document-objects-and-window-objects}
+---------------------------------------------------------------------------
+
+The <dfn>ontransitionend</dfn> <a>event handler</a> (corresponding to the <a
+idl>transitionend</a> <a>event handler event type</a>) must be supported by all
+<a>HTML elements</a>, as both <a>event handler content attributes</a> and
+<a>event handler IDL attributes</a>; and must be supported by all {{Document}}
+and {{Window}} objects, as <a>event handler IDL attributes</a>.
+
+
+DOM Interfaces {#interface-dom}
+===============================
+
+This specification extends the {{GlobalEventHandlers}} interface from HTML to
+add <a>event handler IDL attributes</a> for <a
+href="#transition-events">transition events</a> as defined in [[#event-handlers-on-elements-document-objects-and-window-objects]].
+
+IDL Definition {#interface-globaleventhandlers-idl}
+--------------
+
+<pre class="idl">
+partial interface GlobalEventHandlers {
+  attribute EventHandler ontransitionend;
+};
+</pre>
+
+
 <span id="animation-of-property-types-">Animation of property types</span> {#animatable-types}
 ==============================================================================================