css: make the footer opaque

Instead of changing the font color we add opacity to
the whole footer.

Signed-off-by: Christian Hesse <mail@eworm.de>

cgit.css

diff --git a/cgit.css b/cgit.css
index 1b848cf..129006d 100644
--- a/cgit.css
+++ b/cgit.css
@@ -661,11 +661,12 @@
 	margin-top: 0.5em;
 	text-align: center;
 	font-size: 80%;
-	color: #ccc;
+	color: black;
+	opacity: 0.3;
 }
 
 div#cgit div.footer a {
-	color: #ccc;
+	color: black;
 	text-decoration: none;
 }