Correct slideInUp

Fixes animate-css#208

Author: daneden

animate.css

@@ -2637,26 +2637,28 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 
 @-webkit-keyframes slideInUp {
   0% {
+    opacity: 0;
     -webkit-transform: translateY(2000px);
     transform: translateY(2000px);
   }
 
   100% {
-    opacity: 0;
+    opacity: 1;
     -webkit-transform: translateY(0);
     transform: translateY(0);
   }
 }
 
 @keyframes slideInUp {
   0% {
+    opacity: 0;
     -webkit-transform: translateY(2000px);
     -ms-transform: translateY(2000px);
     transform: translateY(2000px);
   }
 
   100% {
-    opacity: 0;
+    opacity: 1;
     -webkit-transform: translateY(0);
     -ms-transform: translateY(0);
     transform: translateY(0);

animate.min.css

@@ -1,10 +1,11 @@
 @keyframes slideInUp {
   0% {
+    opacity: 0;
     transform: translateY(2000px);
   }
 
   100% {
-    opacity: 0;
+    opacity: 1;
     transform: translateY(0);
   }
 }