iphone6 plus 微信浏览器下transition动画无效
但在safari下是ok的，什么原因

  opacity: 0;
  background-color: #378ef1;
  transform: translateY(100%);
  -webkit-transform: translateY(100%);
  transition-property: transform, opacity, -webkit-transform;
  -webkit-transition-property: transform, opacity, -webkit-transform;
  transition-duration: 0.4s;
  -webkit-transition-duration: 0.4s;
  transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  -webkit-transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94);

active

  transform: translateY(0);
  -webkit-transform: translateY(0);
  opacity: 1;