diff --git a/liquid-fire/src/transitions/move-over.js b/liquid-fire/src/transitions/move-over.js
index 2623ccf8..0be13e69 100644
--- a/liquid-fire/src/transitions/move-over.js
+++ b/liquid-fire/src/transitions/move-over.js
@@ -35,12 +35,12 @@ export default function moveOver(dimension, direction, opts) {
 function biggestSize(context, dimension) {
   const sizes = [];
   if (context.newElement) {
-    sizes.push(parseInt(context.newElement.style[dimension], 10));
-    sizes.push(parseInt(context.newElement.parentElement.style[dimension], 10));
+    sizes.push(parseInt(getComputedStyle(context.newElement)[dimension], 10));
+    sizes.push(parseInt(getComputedStyle(context.newElement.parentElement)[dimension], 10));
   }
   if (context.oldElement) {
-    sizes.push(parseInt(context.oldElement.style[dimension], 10));
-    sizes.push(parseInt(context.oldElement.parentElement.style[dimension], 10));
+    sizes.push(parseInt(getComputedStyle(context.oldElement)[dimension], 10));
+    sizes.push(parseInt(getComputedStyle(context.oldElement.parentElement)[dimension], 10));
   }
   return Math.max.apply(null, sizes);
 }