[gnome-text-editor] css: tweak searchbar shadow

[Christian Hergert <chergert src gnome org>]

commit d9c1aaf74d239a1936683cf136d457d66b2aeae8
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 5 13:12:06 2021 -0700

    css: tweak searchbar shadow
    
    This looks a bit closer to Adwaita coloring and spread.

 src/TextEditor.css | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/TextEditor.css b/src/TextEditor.css
index af9fac9..64bfb76 100644
--- a/src/TextEditor.css
+++ b/src/TextEditor.css
@@ -90,7 +90,7 @@
   border-bottom-width: 1px;
   border-bottom-left-radius: 5px;
   border-bottom-right-radius: 5px;
-  box-shadow: 0 0 3px 1px alpha(shade(@borders,0.8),.35);
+  box-shadow: 0 0 5px 1px rgba(0,0,0,0.09);
   margin: 0 10px 20px 10px;
 }
 .org-gnome-TextEditor page .searchbar:backdrop {