Fixed Flip in latest Chrome, FF and IE

Fixed the Flip gliches in Chrome, but also improved it for the latest FF
and IE

Issue animate-css#80 is solved

Author: gpetrov

animate.css

@@ -277,89 +277,89 @@ body { /* Addresses a small issue in webkit: http://bit.ly/NEdoDq */
 }
 @-webkit-keyframes flip {
 	0% {
-		-webkit-transform: perspective(400px) rotateY(0);
+		-webkit-transform: perspective(400px) translateZ(0) rotateY(0) scale(1);
 		-webkit-animation-timing-function: ease-out;
 	}
 	40% {
-		-webkit-transform: perspective(400px) translateZ(150px) rotateY(170deg);
+		-webkit-transform: perspective(400px) translateZ(150px) rotateY(170deg) scale(1);
 		-webkit-animation-timing-function: ease-out;
 	}
 	50% {
 		-webkit-transform: perspective(400px) translateZ(150px) rotateY(190deg) scale(1);
 		-webkit-animation-timing-function: ease-in;
 	}
 	80% {
-		-webkit-transform: perspective(400px) rotateY(360deg) scale(.95);
+		-webkit-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(.95);
 		-webkit-animation-timing-function: ease-in;
 	}
 	100% {
-		-webkit-transform: perspective(400px) scale(1);
+		-webkit-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(1);
 		-webkit-animation-timing-function: ease-in;
 	}
 }
 @-moz-keyframes flip {
 	0% {
-		-moz-transform: perspective(400px) rotateY(0);
+		-moz-transform: perspective(400px) translateZ(0) rotateY(0) scale(1);
 		-moz-animation-timing-function: ease-out;
 	}
 	40% {
-		-moz-transform: perspective(400px) translateZ(150px) rotateY(170deg);
+		-moz-transform: perspective(400px) translateZ(150px) rotateY(170deg) scale(1);
 		-moz-animation-timing-function: ease-out;
 	}
 	50% {
 		-moz-transform: perspective(400px) translateZ(150px) rotateY(190deg) scale(1);
 		-moz-animation-timing-function: ease-in;
 	}
 	80% {
-		-moz-transform: perspective(400px) rotateY(360deg) scale(.95);
+		-moz-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(.95);
 		-moz-animation-timing-function: ease-in;
 	}
 	100% {
-		-moz-transform: perspective(400px) scale(1);
+		-moz-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(1);
 		-moz-animation-timing-function: ease-in;
 	}
 }
 @-o-keyframes flip {
 	0% {
-		-o-transform: perspective(400px) rotateY(0);
+		-o-transform: perspective(400px) translateZ(0) rotateY(0) scale(1);
 		-o-animation-timing-function: ease-out;
 	}
 	40% {
-		-o-transform: perspective(400px) translateZ(150px) rotateY(170deg);
+		-o-transform: perspective(400px) translateZ(150px) rotateY(170deg) scale(1);
 		-o-animation-timing-function: ease-out;
 	}
 	50% {
 		-o-transform: perspective(400px) translateZ(150px) rotateY(190deg) scale(1);
 		-o-animation-timing-function: ease-in;
 	}
 	80% {
-		-o-transform: perspective(400px) rotateY(360deg) scale(.95);
+		-o-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(.95);
 		-o-animation-timing-function: ease-in;
 	}
 	100% {
-		-o-transform: perspective(400px) scale(1);
+		-o-transform: perspective(400px) translateZ(0) rotateY(360deg) scale(1);
 		-o-animation-timing-function: ease-in;
 	}
 }
 @keyframes flip {
 	0% {
-		transform: perspective(400px) rotateY(0);
+		transform: perspective(400px) translateZ(0) rotateY(0) scale(1);
 		animation-timing-function: ease-out;
 	}
 	40% {
-		transform: perspective(400px) translateZ(150px) rotateY(170deg);
+		transform: perspective(400px) translateZ(150px) rotateY(170deg) scale(1);
 		animation-timing-function: ease-out;
 	}
 	50% {
 		transform: perspective(400px) translateZ(150px) rotateY(190deg) scale(1);
 		animation-timing-function: ease-in;
 	}
 	80% {
-		transform: perspective(400px) rotateY(360deg) scale(.95);
+		transform: perspective(400px) translateZ(0) rotateY(360deg) scale(.95);
 		animation-timing-function: ease-in;
 	}
 	100% {
-		transform: perspective(400px) scale(1);
+		transform: perspective(400px) translateZ(0) rotateY(360deg) scale(1);
 		animation-timing-function: ease-in;
 	}
 }