fix rolling links glitch in firefox

css/reveal.css

@@ -1157,15 +1157,15 @@ body {
 .zoomed .reveal *,
 .zoomed .reveal *:before,
 .zoomed .reveal *:after {
-	-webkit-transform: initial !important;
-	   -moz-transform: initial !important;
-	    -ms-transform: initial !important;
-	        transform: initial !important;
+	-webkit-transform: none !important;
+	   -moz-transform: none !important;
+	    -ms-transform: none !important;
+	        transform: none !important;
 
-	-webkit-backface-visibility: initial !important;
-	   -moz-backface-visibility: initial !important;
-	    -ms-backface-visibility: initial !important;
-	        backface-visibility: initial !important;
+	-webkit-backface-visibility: visible !important;
+	   -moz-backface-visibility: visible !important;
+	    -ms-backface-visibility: visible !important;
+	        backface-visibility: visible !important;
 }
 
 .zoomed .reveal .progress,

css/theme/beige.css

@@ -79,7 +79,6 @@ body {
   color: #c0a86e;
   text-shadow: none;
   border: none;
-  border-radius: 2px;
 }
 
 .reveal .roll span:after {

css/theme/default.css

@@ -79,7 +79,6 @@ body {
   color: #71e9f4;
   text-shadow: none;
   border: none;
-  border-radius: 2px;
 }
 
 .reveal .roll span:after {

css/theme/serif.css

@@ -66,7 +66,6 @@ body {
   color: #8b7c69;
   text-shadow: none;
   border: none;
-  border-radius: 2px;
 }
 
 .reveal .roll span:after {

css/theme/simple.css

@@ -68,7 +68,6 @@ body {
   color: #0000f1;
   text-shadow: none;
   border: none;
-  border-radius: 2px;
 }
 
 .reveal .roll span:after {

css/theme/sky.css

@@ -72,7 +72,6 @@ body {
   color: #74a7cb;
   text-shadow: none;
   border: none;
-  border-radius: 2px;
 }
 
 .reveal .roll span:after {

css/theme/template/theme.scss

@@ -68,7 +68,6 @@ body {
 		
 		text-shadow: none;
 		border: none;
-		border-radius: 2px;
 	}
 
 .reveal .roll span:after {