[static-web] Improve the way tables look

[Alexandre Franke <afranke src gnome org>]

commit 5504f6855f1311b1ed4fa715bfb669142c892825
Author: Alexandre Franke <alexandre franke gmail com>
Date:   Wed Sep 27 13:59:23 2017 +0200

    Improve the way tables look

 wiki.gnome.org/gnome-responsive/css/common.css |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/wiki.gnome.org/gnome-responsive/css/common.css b/wiki.gnome.org/gnome-responsive/css/common.css
index 12f0184..547c73f 100644
--- a/wiki.gnome.org/gnome-responsive/css/common.css
+++ b/wiki.gnome.org/gnome-responsive/css/common.css
@@ -66,6 +66,18 @@ td p {
     padding: 0;
 }
 
+td, th {
+    border:1px solid transparent;
+}
+
+tr:nth-child(even) td {
+    background: #f9f9f9;
+}
+
+tr:nth-child(odd) td {
+    background: #fff;
+}
+
 #pagebottom {clear: both;}
 
 /* standard rule ---- */