diff --git a/css/reveal.css b/css/reveal.css
index 778076e..b203074 100644
--- a/css/reveal.css
+++ b/css/reveal.css
@@ -47,6 +47,12 @@ body {
   background-color: #fff;
   color: #000; }
 
+html:-webkit-full-screen-ancestor {
+  background-color: inherit; }
+
+html:-moz-full-screen-ancestor {
+  background-color: inherit; }
+
 /*********************************************
  * VIEW FRAGMENTS
  *********************************************/
diff --git a/css/reveal.scss b/css/reveal.scss
index 9045428..f8d6904 100644
--- a/css/reveal.scss
+++ b/css/reveal.scss
@@ -57,6 +57,15 @@ body {
 	color: #000;
 }
 
+// Ensures that the main background color matches the
+// theme in fullscreen mode
+html:-webkit-full-screen-ancestor {
+	background-color: inherit;
+}
+html:-moz-full-screen-ancestor {
+	background-color: inherit;
+}
+
 
 /*********************************************
  * VIEW FRAGMENTS
diff --git a/css/theme/beige.css b/css/theme/beige.css
index d2caeb8..7424a05 100644
--- a/css/theme/beige.css
+++ b/css/theme/beige.css
@@ -18,26 +18,6 @@ body {
   background: radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
   background-color: #f7f3de; }
 
-html:-webkit-full-screen-ancestor {
-  background: #f7f2d3;
-  background: -moz-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, white), color-stop(100%, #f7f2d3));
-  background: -webkit-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -o-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -ms-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background-color: #f7f3de; }
-
-html:-moz-full-screen-ancestor {
-  background: #f7f2d3;
-  background: -moz-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, white), color-stop(100%, #f7f2d3));
-  background: -webkit-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -o-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: -ms-radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background: radial-gradient(center, circle cover, white 0%, #f7f2d3 100%);
-  background-color: #f7f3de; }
-
 .reveal {
   font-family: "Lato", sans-serif;
   font-size: 40px;
diff --git a/css/theme/black.css b/css/theme/black.css
index 635a2b1..96e4fd4 100644
--- a/css/theme/black.css
+++ b/css/theme/black.css
@@ -14,14 +14,6 @@ body {
   background: #222;
   background-color: #222; }
 
-html:-webkit-full-screen-ancestor {
-  background: #222;
-  background-color: #222; }
-
-html:-moz-full-screen-ancestor {
-  background: #222;
-  background-color: #222; }
-
 .reveal {
   font-family: "Source Sans Pro", Helvetica, sans-serif;
   font-size: 42px;
diff --git a/css/theme/blood.css b/css/theme/blood.css
index 5a1cee5..1e0fbaf 100644
--- a/css/theme/blood.css
+++ b/css/theme/blood.css
@@ -17,14 +17,6 @@ body {
   background: #222;
   background-color: #222; }
 
-html:-webkit-full-screen-ancestor {
-  background: #222;
-  background-color: #222; }
-
-html:-moz-full-screen-ancestor {
-  background: #222;
-  background-color: #222; }
-
 .reveal {
   font-family: Ubuntu, "sans-serif";
   font-size: 40px;
diff --git a/css/theme/league.css b/css/theme/league.css
index 6359446..63711c3 100644
--- a/css/theme/league.css
+++ b/css/theme/league.css
@@ -20,26 +20,6 @@ body {
   background: radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
   background-color: #2b2b2b; }
 
-html:-webkit-full-screen-ancestor {
-  background: #1c1e20;
-  background: -moz-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #555a5f), color-stop(100%, #1c1e20));
-  background: -webkit-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -o-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -ms-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background-color: #2b2b2b; }
-
-html:-moz-full-screen-ancestor {
-  background: #1c1e20;
-  background: -moz-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #555a5f), color-stop(100%, #1c1e20));
-  background: -webkit-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -o-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: -ms-radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background: radial-gradient(center, circle cover, #555a5f 0%, #1c1e20 100%);
-  background-color: #2b2b2b; }
-
 .reveal {
   font-family: "Lato", sans-serif;
   font-size: 40px;
diff --git a/css/theme/moon.css b/css/theme/moon.css
index e6831b0..791a4a0 100644
--- a/css/theme/moon.css
+++ b/css/theme/moon.css
@@ -18,14 +18,6 @@ body {
   background: #002b36;
   background-color: #002b36; }
 
-html:-webkit-full-screen-ancestor {
-  background: #002b36;
-  background-color: #002b36; }
-
-html:-moz-full-screen-ancestor {
-  background: #002b36;
-  background-color: #002b36; }
-
 .reveal {
   font-family: "Lato", sans-serif;
   font-size: 40px;
diff --git a/css/theme/night.css b/css/theme/night.css
index 6ad1089..3db1175 100644
--- a/css/theme/night.css
+++ b/css/theme/night.css
@@ -12,14 +12,6 @@ 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;
diff --git a/css/theme/serif.css b/css/theme/serif.css
index 60654ef..e9b08c6 100644
--- a/css/theme/serif.css
+++ b/css/theme/serif.css
@@ -14,14 +14,6 @@ body {
   background: #F0F1EB;
   background-color: #F0F1EB; }
 
-html:-webkit-full-screen-ancestor {
-  background: #F0F1EB;
-  background-color: #F0F1EB; }
-
-html:-moz-full-screen-ancestor {
-  background: #F0F1EB;
-  background-color: #F0F1EB; }
-
 .reveal {
   font-family: "Palatino Linotype", "Book Antiqua", Palatino, FreeSerif, serif;
   font-size: 40px;
diff --git a/css/theme/simple.css b/css/theme/simple.css
index 86f6af6..f64343e 100644
--- a/css/theme/simple.css
+++ b/css/theme/simple.css
@@ -17,14 +17,6 @@ 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;
diff --git a/css/theme/sky.css b/css/theme/sky.css
index 6ee8cde..33689eb 100644
--- a/css/theme/sky.css
+++ b/css/theme/sky.css
@@ -21,26 +21,6 @@ body {
   background: radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
   background-color: #f7fbfc; }
 
-html:-webkit-full-screen-ancestor {
-  background: #add9e4;
-  background: -moz-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #f7fbfc), color-stop(100%, #add9e4));
-  background: -webkit-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -o-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -ms-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background-color: #f7fbfc; }
-
-html:-moz-full-screen-ancestor {
-  background: #add9e4;
-  background: -moz-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -webkit-gradient(radial, center center, 0px, center center, 100%, color-stop(0%, #f7fbfc), color-stop(100%, #add9e4));
-  background: -webkit-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -o-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: -ms-radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background: radial-gradient(center, circle cover, #f7fbfc 0%, #add9e4 100%);
-  background-color: #f7fbfc; }
-
 .reveal {
   font-family: "Open Sans", sans-serif;
   font-size: 40px;
diff --git a/css/theme/solarized.css b/css/theme/solarized.css
index d554ca9..9bd21aa 100644
--- a/css/theme/solarized.css
+++ b/css/theme/solarized.css
@@ -18,14 +18,6 @@ body {
   background: #fdf6e3;
   background-color: #fdf6e3; }
 
-html:-webkit-full-screen-ancestor {
-  background: #fdf6e3;
-  background-color: #fdf6e3; }
-
-html:-moz-full-screen-ancestor {
-  background: #fdf6e3;
-  background-color: #fdf6e3; }
-
 .reveal {
   font-family: "Lato", sans-serif;
   font-size: 40px;
diff --git a/css/theme/template/theme.scss b/css/theme/template/theme.scss
index 8d4b8a7..bcbaf0c 100644
--- a/css/theme/template/theme.scss
+++ b/css/theme/template/theme.scss
@@ -9,17 +9,6 @@ body {
 	background-color: $backgroundColor;
 }
 
-// Ensures that the main background color matches the
-// theme in fullscreen mode
-html:-webkit-full-screen-ancestor {
-	@include bodyBackground();
-	background-color: $backgroundColor;
-}
-html:-moz-full-screen-ancestor {
-	@include bodyBackground();
-	background-color: $backgroundColor;
-}
-
 .reveal {
 	font-family: $mainFont;
 	font-size: $mainFontSize;
diff --git a/css/theme/white.css b/css/theme/white.css
index 1048a6e..7adc605 100644
--- a/css/theme/white.css
+++ b/css/theme/white.css
@@ -14,14 +14,6 @@ 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: "Source Sans Pro", Helvetica, sans-serif;
   font-size: 42px;