媒体查询：prefers-reduced-motion

Only for mac

用户偏爱设置： Reduce motion （减少动效）

开启：

    @media (prefers-reduced-motion: reduce) {
      div {
        animation: none;
      }
    }

关闭：

    @media (prefers-reduced-motion: no-preference) {
      div {
        animation: anim infinite 2s;
      }
    }