[gnome-shell-sass] authPrompt: Iconize the cancel button

[Florian Müllner <fmuellner src gnome org>]

commit fdaa49705438c0c90d9e53de24d5d6ab36932122
Author: Umang Jain <mailumangjain gmail com>
Date:   Tue Jan 14 20:45:48 2020 +0530

    authPrompt: Iconize the cancel button
    
    Replace the "Cancel" label in the cancel button
    by an arrow icon, and adjust the theme to make
    it circular.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/922

 widgets/_login-dialog.scss | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/widgets/_login-dialog.scss b/widgets/_login-dialog.scss
index 4455668..31c7b0c 100644
--- a/widgets/_login-dialog.scss
+++ b/widgets/_login-dialog.scss
@@ -68,6 +68,17 @@
       }
     }
   }
+
+  .cancel-button {
+    padding: 0;
+    border-radius: 99px;
+    width: $base_icon_size * 2;
+    height: $base_icon_size * 2;
+    border-color: transparentize($bg_color,0.7);
+    background-color: transparentize($bg_color,0.7);
+
+    StIcon { icon-size: $base_icon_size; }
+  }
 }
 
 .login-dialog-logo-bin { padding: 24px 0px; }