diff --git a/assets/index.less b/assets/index.less
index 08688af..4762927 100644
--- a/assets/index.less
+++ b/assets/index.less
@@ -216,9 +216,9 @@
     animation-timing-function: @ease-in-quint;
   }
 }
-.zoom-motion(rc-slider-tooltip-zoom-down, rcSliderTooltipZoomDownOut);
+.zoom-motion(rc-slider-tooltip-zoom-down, rcSliderTooltipZoomDown);
 
-@keyframes rcSliderTooltipZoomDownOutIn {
+@keyframes rcSliderTooltipZoomDownIn {
   0% {
     opacity: 0;
     transform-origin: 50% 100%;
@@ -230,7 +230,7 @@
   }
 }
 
-@keyframes rcSliderTooltipZoomDownOutOut {
+@keyframes rcSliderTooltipZoomDownOut {
   0% {
     transform-origin: 50% 100%;
     transform: scale(1, 1);