tweak color and position of username in public share

apps/files_sharing/css/public.css

@@ -14,20 +14,19 @@ body {
 	padding:7px;
 }
 
-#details {
-	color:#fff;
-	float: left;
-}
-
-.header-right #details {
-	margin-right: 28px;
-}
-
 .header-right {
 	padding: 0;
 	height: 32px;
 }
 
+#details {
+	color:#fff;
+	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
+	filter: alpha(opacity=50);
+	opacity: .5;
+	padding-right: 5px;
+}
+
 #controls {
 	left: 0;
 }