From 91540ac6d91b2d66217740ff24e1af34ddb0de3f Mon Sep 17 00:00:00 2001
From: Uwe Steinmann <steinm@debian.org>
Date: Mon, 7 Nov 2016 09:29:01 +0100
Subject: [PATCH] set white background of preview images

if a document was converted from an office format to pdf and then to
png, the png has transparent areas on the borders of the page. This
makes the gray of the backgrond shine through, which looked quite ugly.
---
 styles/bootstrap/application.css | 1 +
 1 file changed, 1 insertion(+)

diff --git a/styles/bootstrap/application.css b/styles/bootstrap/application.css
index 97f494a7b..777b68bcd 100644
--- a/styles/bootstrap/application.css
+++ b/styles/bootstrap/application.css
@@ -10,6 +10,7 @@ img.mimeicon {
   border-color: #CCCCCC #AAAAAA #999999 #CCCCCC;
   border-style: solid;
   border-width: 1px 2px 2px 1px;
+	background-color: white;
 }
 
 .list-action a {