[gnome-boxes] style: Add a comment to boxes-step-label class

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit a5f6cdc4fe26cd82ac5f71953aa5b4c515c9342b
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Sep 16 14:10:58 2015 +0100

    style: Add a comment to boxes-step-label class
    
    Based on a patch from Lapo Calamandrei <calamandrei gmail com>.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=754565

 data/gtk-style.css |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/gtk-style.css b/data/gtk-style.css
index 5177532..9904a30 100644
--- a/data/gtk-style.css
+++ b/data/gtk-style.css
@@ -26,6 +26,7 @@ BoxesResourceGraph {
     background-image: none;
 }
 
+/* This is the subtitle in the ISOs/media list */
 .boxes-step-label {
     color: #989898;
     font-size: 11px;