[gnome-games] css: Update game thumbnail style

[Alexander Mikhaylenko <alexm src gnome org>]

commit 6e5ed7cb7a97974874b81f8ed15c4930bafd8461
Author: Neville <nevilleantony98 gmail com>
Date:   Fri Jun 12 09:52:23 2020 +0530

    css: Update game thumbnail style
    
    Add 6px border radius to GameThumbnail.
    Also adds a 1px border for all non-cover GameThumbnail.

 data/gtk-style.css | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/data/gtk-style.css b/data/gtk-style.css
index a5d7f27e..28df6874 100644
--- a/data/gtk-style.css
+++ b/data/gtk-style.css
@@ -27,12 +27,13 @@
 
 gamesgamethumbnail {
        background-color: mix(@theme_base_color, @theme_bg_color, 0.5);
-       border-radius: 2px;
-       box-shadow: 0 0 0 1px @theme_bg_color;
+       border-radius: 6px;
+       border: 1px solid @borders;
 }
 
 gamesgamethumbnail.cover {
        background-color: black;
+       border: none;
 }
 
 gamesgamespage flowboxchild {