[gnumeric] Dead Kitten: set font attributes for itembar headers

[Morten Welinder <mortenw src gnome org>]

commit a18cd5a232b2dceb36f96153e72928c0c5b66ac0
Author: Morten Welinder <terra gnome org>
Date:   Fri Dec 20 21:13:33 2019 -0500

    Dead Kitten: set font attributes for itembar headers

 src/gnumeric.css | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/src/gnumeric.css b/src/gnumeric.css
index 55e8fc0e3..291b8eb6b 100644
--- a/src/gnumeric.css
+++ b/src/gnumeric.css
@@ -247,6 +247,11 @@ button.itembar, button.itembar * {
   padding-right: 5px;
   padding-top: 2px;
   padding-bottom: 2px;
+  /* The font setup here shouldn't be needed, but we've had a report
+     indicating that it might be with newer Gtk+.  */
+  font-family: Sans;
+  font-style: normal;
+  font-variant: normal;
 }
 
 /* The whole column/row selected. */