diff --git a/index.bs b/index.bs
index 5a71a39..8f0054d 100644
--- a/index.bs
+++ b/index.bs
@@ -192,6 +192,8 @@ A [=browsing context=] |ctx| is <dfn>paint-timing eligible</dfn> when one of the
     For example, a user agent may decide to disable paint-timing for cross-origin iframes, as in some scenarios their paint-timing might reveal information about the main frame.
 
 The {{PaintTimingMixin}} interface {#sec-PaintTimingMixin}
+=======================================
+
 <pre class="idl">
     [Exposed=Window]
     interface mixin PaintTimingMixin {