From 779183f71a7f695b5e1960109845d615e4495eb3 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 21 Jan 2024 12:59:24 +0530
Subject: [PATCH] Document the css class used for popup footnotes

---
 manual/viewer.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/manual/viewer.rst b/manual/viewer.rst
index 3c6f59084c..c9a57fc177 100644
--- a/manual/viewer.rst
+++ b/manual/viewer.rst
@@ -424,6 +424,9 @@ the viewer will set the following classes on the ``body`` element:
 ``body.calibre-viewer-scrolling``
     Set when in flow (non-paginated) mode
 
+``body.calibre-footnote-container``
+    Set when displaying a popup footnote
+
 Finally, you can use the calibre color scheme colors via `CSS variables
 <https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties>`_.
 The calibre viewer defines the following variables: