Let me make this timing.

dist/ratchet.css

@@ -937,11 +937,11 @@ button.button-block {
 }
 .content.slide {
   z-index: 2;
-  -webkit-transition-timing-function: cubic-bezier(0.1, 0.7, 0.1, 1);
   -webkit-transition: -webkit-transform .4s;
   transition: transform .4s;
   -webkit-transform: translate3d(0, 0, 0);
   transform: translate3d(0, 0, 0);
+  -webkit-transition-timing-function: cubic-bezier(0.1, 0.7, 0.1, 1);
 }
 .content.slide.sliding-in, .content.slide.right:not([class*="sliding-in"]) {
   -webkit-animation-name: fadeOverlay;

lib/sass/push.scss

@@ -19,11 +19,11 @@
   // Slide animation iOS7
   &.slide {
     z-index: 2;
-    -webkit-transition-timing-function: cubic-bezier(.1, .7, .1, 1); // Inspired by @c2prods
     -webkit-transition: -webkit-transform .4s;
             transition:         transform .4s;
     -webkit-transform: translate3d(0, 0, 0);
             transform: translate3d(0, 0, 0);
+    -webkit-transition-timing-function: cubic-bezier(.1, .7, .1, 1); // Inspired by @c2prods
 
     // Adding the overlay
     &.sliding-in,