[css-animations-2] clarify that CSS animation events are dispatched a…

…t the owning element

css-animations-2/Overview.bs

@@ -31,6 +31,10 @@ Editor: Brian Birtles, Mozilla https://www.mozilla.org/, bbirtles@mozilla.com, w
 Abstract: This CSS module describes a way for authors to animate the values of CSS properties over time, using keyframes. The behavior of these keyframe animations can be controlled by specifying their duration, number of repeats, and repeating behavior.
 Ignored Vars: auto-rewind
 </pre>
+<pre class=anchors>
+urlPrefix: https://dom.spec.whatwg.org/; type: dfn; spec: dom
+    text: event target
+</pre>
 <pre class=link-defaults>
 spec:web-animations-1; type:dfn;
     text:active duration
@@ -39,6 +43,7 @@ spec:web-animations-1; type:dfn;
     text:after phase; for:animation effect
     text:animation class
     text:animation effect
+    text:animation playback events
     text:associated effect
     text:associated effect end
     text:before phase; for:animation effect
@@ -585,6 +590,12 @@ Animations Level 1 [[CSS3-ANIMATIONS]] since it must account for the
 possibility of animations being seeked or reversed using the Web Animations API
 [[WEB-ANIMATIONS]].
 
+The [=event target|target=] for a CSS animation event is
+the animation's [=owning element=].
+If there is no [=owning element=], no CSS animation events are dispatched
+(although the [=animation playback events=] defined in Web Animations are still
+dispatched at the corresponding {{CSSAnimation}} object).
+
 For the purpose of determining which events to dispatch, the
 [[web-animations-1#animation-effect-phases-and-states|phases]] defined in
 the Web Animations model are used. These definitions apply to an <a>animation