[gnome-text-editor] css: improve focus ring for previews

[Christian Hergert <chergert src gnome org>]

commit 417ba1481554213cf518c8eed7bb86006605a796
Author: Christian Hergert <chergert redhat com>
Date:   Sun Dec 26 18:34:10 2021 -0800

    css: improve focus ring for previews
    
    Related #271

 src/TextEditor.css | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/TextEditor.css b/src/TextEditor.css
index dc1296c..18c14b7 100644
--- a/src/TextEditor.css
+++ b/src/TextEditor.css
@@ -9,7 +9,9 @@ window.org-gnome-TextEditor.preferences textview.preview {
   line-height: 1.2;
 }
 window.org-gnome-TextEditor.preferences preferencesgroup flowboxchild {
-  border-radius: 11px;
+  outline-offset: -3px;
+  border-radius: 14px;
+  outline-width: 2px;
 }