1 files changed, 8 insertions, 0 deletions
diff --git a/css/theme/simple.css b/css/theme/simple.css
index f64343e..86f6af6 100644
--- a/css/theme/simple.css
+++ b/css/theme/simple.css
@@ -17,6 +17,14 @@ body {
   background: #fff;
   background-color: #fff; }
 
+html:-webkit-full-screen-ancestor {
+  background: #fff;
+  background-color: #fff; }
+
+html:-moz-full-screen-ancestor {
+  background: #fff;
+  background-color: #fff; }
+
 .reveal {
   font-family: "Lato", sans-serif;
   font-size: 40px;