Flop animation

The effect is as follows (compatible with mobile terminal):

css part:

<style type="text/css">

*, *:before, *:after {
  box-sizing: border-box;
}
html {
  font-size: 18px;
  line-height: 1.5;
  font-weight: 300;
  color: #333;
  font-family: "Nunito Sans", sans-serif;
}
body {
  margin: 0;
  padding: 0;
  height: 100vh;
  background-color: #ecf0f9;
  background-attachment: fixed;
}
.content {
  display: flex;
  margin: 0 auto;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  width: 1200px;
}
.card {
  color: inherit;
  cursor: pointer;
  width: 150px;
  height: 200px;
  perspective: 1000px;
  margin: 1rem;
  position: relative;
}
.front,
.back {
  display: flex;
  border-radius: 6px;
  background-position: center;
  text-align: center;
  justify-content: center;
  align-items: center;
  position: absolute;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  transition: ease-in-out 600ms;
  width: 150px;
  height: 200px;
}
.front img,
.back img{
    width: 150px;
  height: 200px;
}
.front {
  overflow: hidden;
}
.card.active .front {
  transform: rotateY(180deg);
}
.back{
  transform: rotateY(-180deg);
}
.card.active .back {
  transform: rotateY(0deg);
}

</style>

html part:

<div class="content">
  <a class="card" href="#!">
    <div class="front">
        <img src="images/20190612/front.png">
    </div>
    <div class="back">
        <img src="images/20190612/0.png">
    </div>
  </a>   
  <a class="card" href="#!">
    <div class="front">
        <img src="images/20190612/front.png">
    </div>
    <div class="back">
        <img src="images/20190612/0.png">
    </div>
  </a>  
  <a class="card" href="#!">
    <div class="front">
        <img src="images/20190612/front.png">
    </div>
    <div class="back">
        <img src="images/20190612/0.png">
    </div>
  </a>  
</div>

js part:

<script type="text/javascript" src="js/20190612/jquery-3.3.1.min.js"></script>
<script type="text/javascript">
    $(".card").click(function(){
        $(this).addClass("active");
    });
</script>

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Origin blog.csdn.net/u012011360/article/details/92766950