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纯css简单箭头动画效果

效果如下:

完整代码:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>纯css简单箭头动画效果</title>
<style>
body {
  background: #222;
}

.arrow {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  -webkit-transform: translate3d(-50%, -50%, 0);
          transform: translate3d(-50%, -50%, 0);
}

.arrow-1 {
  -webkit-animation: arrow-movement 2s ease-in-out infinite;
          animation: arrow-movement 2s ease-in-out infinite;
}

.arrow-2 {
  -webkit-animation: arrow-movement 2s 1s ease-in-out infinite;
          animation: arrow-movement 2s 1s ease-in-out infinite;
}

.arrow:before,
.arrow:after {
  background: #fff;
  content: '';
  display: block;
  height: 3px;
  position: absolute;
  top: 0;
  left: 0;
  width: 30px;
}

.arrow:before {
  -webkit-transform: rotate(45deg) translateX(-23%);
          transform: rotate(45deg) translateX(-23%);
  -webkit-transform-origin: top left;
          transform-origin: top left;
}

.arrow:after {
  -webkit-transform: rotate(-45deg) translateX(23%);
          transform: rotate(-45deg) translateX(23%);
  -webkit-transform-origin: top right;
          transform-origin: top right;
}

@-webkit-keyframes arrow-movement {
  0% {
    opacity: 0;
    top: 45%;
  }
  70% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes arrow-movement {
  0% {
    opacity: 0;
    top: 45%;
  }
  70% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
</style>
</head>
<body>
<div class="arrow arrow-1"></div>
<div class="arrow arrow-2"></div>

<script>
</script>

</body>
</html>


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