diff --git a/data/gemserver/public/css/master.css b/data/gemserver/public/css/master.css
index 059ad77..d178d3a 100644
--- a/data/gemserver/public/css/master.css
+++ b/data/gemserver/public/css/master.css
@@ -25,6 +25,14 @@ html {
 	min-height: 100%;
 }
 
+/* Make these block-level elements explicitly so FF<4 renders them correctly */
+section,
+article,
+aside,
+header,
+footer { display: block; }
+
+
 body {
 	background: #f0f0f2;
 	background-image: -webkit-gradient(radial,