[gnome-web-www] Fix columns layout on "Previous Donors" page

[Tom Tryfonidis <tomtryf src gnome org>]

commit 8ebbe8a2c4305e6b68a1cee27b517679d964c772
Author: Tom Tryfonidis <tomtryf gnome org>
Date:   Tue Jan 24 19:32:01 2017 +0200

    Fix columns layout on "Previous Donors" page

 theme/style.css |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/theme/style.css b/theme/style.css
index 63f5f4a..5087a5a 100644
--- a/theme/style.css
+++ b/theme/style.css
@@ -1473,6 +1473,13 @@ class[*="span"] .omega {
     margin-right: 0;
 }
 
+.col-3 {
+    list-style-type: disc;
+    columns: 3;
+    -webkit-columns: 3;
+    -moz-columns: 3;
+}
+
 /* Social Icons */
 /* ========================================================================== */