[gnomegr-web] Add a CSS class for the homepage banner

[Tom Tryfonidis <tomtryf src gnome org>]

commit 6ab07a7ab60288314ea8213238cf10cfb8aa5209
Author: Tom Tryfonidis <tomtryf gnome org>
Date:   Mon Nov 28 22:59:13 2016 +0200

    Add a CSS class for the homepage banner

 gnomegr/style.css |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/gnomegr/style.css b/gnomegr/style.css
index 9609502..a17b851 100644
--- a/gnomegr/style.css
+++ b/gnomegr/style.css
@@ -135,7 +135,12 @@ a:visited {
 #header #logo img:hover {
    opacity: 0.85;
 }
-
+#home_banner img {
+    width: 940px;
+    height: 280px;
+    display: block;
+    margin: 0 auto;
+}
 
 
 /* Top bar */