js css3卡片自动翻转动画

使用方法：

1、head引入css文件

<link rel="stylesheet" href="css/style.css"/>

2、body引入部分

<div class="grids">
  <div class="card-one">
    <div class="card">
      <div class="card__side card__side--front" id="front-1">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-1">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-two">
    <div class="card">
      <div class="card__side card__side--front" id="front-2">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-2">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-three">
    <div class="card">
      <div class="card__side card__side--front" id="front-3">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-3">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-four">
    <div class="card">
      <div class="card__side card__side--front" id="front-4">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-4">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-five">
    <div class="card">
      <div class="card__side card__side--front" id="front-5">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-5">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-six">
    <div class="card">
      <div class="card__side card__side--front" id="front-6">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-6">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
  <div class="card-seven">
    <div class="card">
      <div class="card__side card__side--front" id="front-7">
        <div class="text-box">
          <h3 class="text-box-top">Flipping Cards</h3>
          <h1 class="text-box-middle">Awesome!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
      <div class="card__side card__side--back" id="back-7">
        <div class="text-box">
          <h3 class="text-box-top">Cards Flipped</h3>
          <h1 class="text-box-middle">Great!</h1>
          <h3 class="text-box-lower">--- More Text ---</h3>
        </div>
      </div>
    </div>
  </div>
</div>

<script src="js/script.js"></script>