diff --git a/css/reveal.css b/css/reveal.css
index a83c155..705d966 100644
--- a/css/reveal.css
+++ b/css/reveal.css
@@ -172,45 +172,45 @@ body {
   -webkit-appearance: none;
   -webkit-tap-highlight-color: rgba(0, 0, 0, 0); }
 
-.reveal .controls button.enabled {
+.reveal .controls .enabled {
   opacity: 0.7;
   cursor: pointer; }
 
-.reveal .controls button.enabled:active {
+.reveal .controls .enabled:active {
   margin-top: 1px; }
 
-.reveal .controls button.navigate-left {
+.reveal .controls .navigate-left {
   top: 42px;
   border-right-width: 22px;
   border-right-color: #000; }
 
-.reveal .controls button.navigate-left.fragmented {
+.reveal .controls .navigate-left.fragmented {
   opacity: 0.3; }
 
-.reveal .controls button.navigate-right {
+.reveal .controls .navigate-right {
   left: 74px;
   top: 42px;
   border-left-width: 22px;
   border-left-color: #000; }
 
-.reveal .controls button.navigate-right.fragmented {
+.reveal .controls .navigate-right.fragmented {
   opacity: 0.3; }
 
-.reveal .controls button.navigate-up {
+.reveal .controls .navigate-up {
   left: 42px;
   border-bottom-width: 22px;
   border-bottom-color: #000; }
 
-.reveal .controls button.navigate-up.fragmented {
+.reveal .controls .navigate-up.fragmented {
   opacity: 0.3; }
 
-.reveal .controls button.navigate-down {
+.reveal .controls .navigate-down {
   left: 42px;
   top: 74px;
   border-top-width: 22px;
   border-top-color: #000; }
 
-.reveal .controls button.navigate-down.fragmented {
+.reveal .controls .navigate-down.fragmented {
   opacity: 0.3; }
 
 /*********************************************
diff --git a/css/reveal.scss b/css/reveal.scss
index a8558a9..1be6151 100644
--- a/css/reveal.scss
+++ b/css/reveal.scss
@@ -228,54 +228,54 @@ body {
 	-webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
 }
 
-.reveal .controls button.enabled {
+.reveal .controls .enabled {
 	opacity: 0.7;
 	cursor: pointer;
 }
 
-.reveal .controls button.enabled:active {
+.reveal .controls .enabled:active {
 	margin-top: 1px;
 }
 
-	.reveal .controls button.navigate-left {
+	.reveal .controls .navigate-left {
 		top: 42px;
 
 		border-right-width: 22px;
 		border-right-color: #000;
 	}
-		.reveal .controls button.navigate-left.fragmented {
+		.reveal .controls .navigate-left.fragmented {
 			opacity: 0.3;
 		}
 
-	.reveal .controls button.navigate-right {
+	.reveal .controls .navigate-right {
 		left: 74px;
 		top: 42px;
 
 		border-left-width: 22px;
 		border-left-color: #000;
 	}
-		.reveal .controls button.navigate-right.fragmented {
+		.reveal .controls .navigate-right.fragmented {
 			opacity: 0.3;
 		}
 
-	.reveal .controls button.navigate-up {
+	.reveal .controls .navigate-up {
 		left: 42px;
 
 		border-bottom-width: 22px;
 		border-bottom-color: #000;
 	}
-		.reveal .controls button.navigate-up.fragmented {
+		.reveal .controls .navigate-up.fragmented {
 			opacity: 0.3;
 		}
 
-	.reveal .controls button.navigate-down {
+	.reveal .controls .navigate-down {
 		left: 42px;
 		top: 74px;
 
 		border-top-width: 22px;
 		border-top-color: #000;
 	}
-		.reveal .controls button.navigate-down.fragmented {
+		.reveal .controls .navigate-down.fragmented {
 			opacity: 0.3;
 		}
 
diff --git a/css/theme/beige.css b/css/theme/beige.css
index 8c880a9..56782f2 100644
--- a/css/theme/beige.css
+++ b/css/theme/beige.css
@@ -226,28 +226,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #8b743d; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #8b743d; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #8b743d; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #8b743d; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #c0a76e; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #c0a76e; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #c0a76e; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #c0a76e; }
 
 /*********************************************
diff --git a/css/theme/black.css b/css/theme/black.css
index 5ff960e..fce771b 100644
--- a/css/theme/black.css
+++ b/css/theme/black.css
@@ -222,28 +222,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #42affa; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #42affa; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #42affa; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #42affa; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #8dcffc; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #8dcffc; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #8dcffc; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #8dcffc; }
 
 /*********************************************
diff --git a/css/theme/blood.css b/css/theme/blood.css
index 8d554df..e395936 100644
--- a/css/theme/blood.css
+++ b/css/theme/blood.css
@@ -225,28 +225,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #a23; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #a23; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #a23; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #a23; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #dd5567; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #dd5567; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #dd5567; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #dd5567; }
 
 /*********************************************
diff --git a/css/theme/league.css b/css/theme/league.css
index ed1641c..5daa1d3 100644
--- a/css/theme/league.css
+++ b/css/theme/league.css
@@ -228,28 +228,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #13DAEC; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #13DAEC; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #13DAEC; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #13DAEC; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #71ebf4; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #71ebf4; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #71ebf4; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #71ebf4; }
 
 /*********************************************
diff --git a/css/theme/moon.css b/css/theme/moon.css
index 55e1662..7250cc4 100644
--- a/css/theme/moon.css
+++ b/css/theme/moon.css
@@ -226,28 +226,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #268bd2; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #268bd2; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #268bd2; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #268bd2; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #78bae6; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #78bae6; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #78bae6; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #78bae6; }
 
 /*********************************************
diff --git a/css/theme/night.css b/css/theme/night.css
index efaa969..1bc8fbb 100644
--- a/css/theme/night.css
+++ b/css/theme/night.css
@@ -220,28 +220,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #e7ad52; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #e7ad52; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #e7ad52; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #e7ad52; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #f3d7ac; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #f3d7ac; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #f3d7ac; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #f3d7ac; }
 
 /*********************************************
diff --git a/css/theme/serif.css b/css/theme/serif.css
index 69dbf96..200a985 100644
--- a/css/theme/serif.css
+++ b/css/theme/serif.css
@@ -222,28 +222,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #51483D; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #51483D; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #51483D; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #51483D; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #8b7b69; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #8b7b69; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #8b7b69; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #8b7b69; }
 
 /*********************************************
diff --git a/css/theme/simple.css b/css/theme/simple.css
index e63edc2..a6fccd5 100644
--- a/css/theme/simple.css
+++ b/css/theme/simple.css
@@ -222,28 +222,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #00008B; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #00008B; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #00008B; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #00008B; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #0000f1; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #0000f1; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #0000f1; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #0000f1; }
 
 /*********************************************
diff --git a/css/theme/sky.css b/css/theme/sky.css
index 99bf027..f422079 100644
--- a/css/theme/sky.css
+++ b/css/theme/sky.css
@@ -229,28 +229,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #3b759e; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #3b759e; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #3b759e; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #3b759e; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #74a8cb; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #74a8cb; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #74a8cb; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #74a8cb; }
 
 /*********************************************
diff --git a/css/theme/solarized.css b/css/theme/solarized.css
index 56e8b36..c112696 100644
--- a/css/theme/solarized.css
+++ b/css/theme/solarized.css
@@ -226,28 +226,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #268bd2; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #268bd2; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #268bd2; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #268bd2; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #78bae6; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #78bae6; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #78bae6; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #78bae6; }
 
 /*********************************************
diff --git a/css/theme/template/theme.scss b/css/theme/template/theme.scss
index 12edb51..e0e5fb6 100644
--- a/css/theme/template/theme.scss
+++ b/css/theme/template/theme.scss
@@ -285,39 +285,39 @@ body {
  * NAVIGATION CONTROLS
  *********************************************/
 
-.reveal .controls div.navigate-left,
-.reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left,
+.reveal .controls .navigate-left.enabled {
 	border-right-color: $linkColor;
 }
 
-.reveal .controls div.navigate-right,
-.reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right,
+.reveal .controls .navigate-right.enabled {
 	border-left-color: $linkColor;
 }
 
-.reveal .controls div.navigate-up,
-.reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up,
+.reveal .controls .navigate-up.enabled {
 	border-bottom-color: $linkColor;
 }
 
-.reveal .controls div.navigate-down,
-.reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down,
+.reveal .controls .navigate-down.enabled {
 	border-top-color: $linkColor;
 }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
 	border-right-color: $linkColorHover;
 }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
 	border-left-color: $linkColorHover;
 }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
 	border-bottom-color: $linkColorHover;
 }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
 	border-top-color: $linkColorHover;
 }
 
diff --git a/css/theme/white.css b/css/theme/white.css
index 171e719..48754bd 100644
--- a/css/theme/white.css
+++ b/css/theme/white.css
@@ -222,28 +222,28 @@ body {
 /*********************************************
  * NAVIGATION CONTROLS
  *********************************************/
-.reveal .controls div.navigate-left, .reveal .controls div.navigate-left.enabled {
+.reveal .controls .navigate-left, .reveal .controls .navigate-left.enabled {
   border-right-color: #2a76dd; }
 
-.reveal .controls div.navigate-right, .reveal .controls div.navigate-right.enabled {
+.reveal .controls .navigate-right, .reveal .controls .navigate-right.enabled {
   border-left-color: #2a76dd; }
 
-.reveal .controls div.navigate-up, .reveal .controls div.navigate-up.enabled {
+.reveal .controls .navigate-up, .reveal .controls .navigate-up.enabled {
   border-bottom-color: #2a76dd; }
 
-.reveal .controls div.navigate-down, .reveal .controls div.navigate-down.enabled {
+.reveal .controls .navigate-down, .reveal .controls .navigate-down.enabled {
   border-top-color: #2a76dd; }
 
-.reveal .controls div.navigate-left.enabled:hover {
+.reveal .controls .navigate-left.enabled:hover {
   border-right-color: #6ca2e8; }
 
-.reveal .controls div.navigate-right.enabled:hover {
+.reveal .controls .navigate-right.enabled:hover {
   border-left-color: #6ca2e8; }
 
-.reveal .controls div.navigate-up.enabled:hover {
+.reveal .controls .navigate-up.enabled:hover {
   border-bottom-color: #6ca2e8; }
 
-.reveal .controls div.navigate-down.enabled:hover {
+.reveal .controls .navigate-down.enabled:hover {
   border-top-color: #6ca2e8; }
 
 /*********************************************