[gnome-calculator/wip/exalm/fix-style: 2/7] Revert "* -removing green tint (part 1)"

[Alexander Mikhaylenko <alexm src gnome org>]

commit 6681323e4249699ba555db280fbc6c19b2da7664
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Fri May 6 16:59:39 2022 +0400

    Revert "* -removing green tint (part 1)"
    
    This reverts commit 27390a19943812b8c53248d923bd63e60d361610.

 src/math-display.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/math-display.vala b/src/math-display.vala
index 99bdc455..1d3119a3 100644
--- a/src/math-display.vala
+++ b/src/math-display.vala
@@ -38,6 +38,7 @@ public class MathDisplay : Gtk.Box
     {
         _equation = equation;
         orientation = Gtk.Orientation.VERTICAL;
+        this.add_css_class ("math-display");
 
         var scrolled_window = new Gtk.ScrolledWindow ();
         scrolled_window.add_css_class ("display-scrolled");