fix theme backgrounds in firefox fullscreen mode #1386

1 files changed, 8 insertions, 0 deletions

diff --git a/css/theme/night.css b/css/theme/night.css
index 3db1175..6ad1089 100644
--- a/css/theme/night.css
+++ b/css/theme/night.css
@@ -12,6 +12,14 @@ body {
   background: #111;
   background-color: #111; }
 
+html:-webkit-full-screen-ancestor {
+  background: #111;
+  background-color: #111; }
+
+html:-moz-full-screen-ancestor {
+  background: #111;
+  background-color: #111; }
+
 .reveal {
   font-family: "Open Sans", sans-serif;
   font-size: 40px;