<template>
<div id="try">
 <!-- box_rolling下执行正面翻转动画   -->
<div class="rollbox" :class="{'box_rolling':isRolling}" @click="isRolling = !isRolling">
 <!-- 前面div -->
 <div class="rollbox_front">
  <div class="contentbox">
   <img src="@/assets/images/s1.png"/>
  </div>
 </div>
 <!-- 后面div -->
 <div class="rollbox_behind">
  <div class="contentbox">
   <img src="@/assets/images/s2.png"/>
  </div>
 </div>
</div>
</div>
</template>
<script>

export default{
 name:'try',
 data(){
  return{
   isRolling:false
  }
 }
}
</script>
<style lang='scss'>
#try{
 .rollbox{
  position: relative;
     perspective: 1000px;
  width:200px;
  height: 400px;
  margin:100px auto;

    &_front,
    &_behind{
   transform-style: preserve-3d; //表示所有子元素在3D空间中呈现
       backface-visibility: hidden;  //元素背面向屏幕时是否可见
        transition-duration:.5s;
     transition-timing-function:'ease-in';
   background:#008080;
   .contentbox{
    width:200px;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
    >img{
     width:100px;
    }
   }
    }
    &_behind{
      transform: rotateY(180deg);
      visibility:hidden;  //元素不可见，但占据空间
      position: absolute;
      top:0;
      bottom:0;
      right: 0;
      left: 0;
    }
 }
 .box_rolling{
    .rollbox_front{
      transform: rotateY(180deg);
      visibility:hidden;
    }
    .rollbox_behind{
      transform: rotateY(360deg);
      visibility:visible;
    }
  }
}
</style>