CSS3动画之loading-2

loading效果gif图如下：
这里写图片描述

代码如下：
css:

* {
  padding: 0;
  margin: 0;
}
.loading_box {
  padding-top: 120px;
}
.loading {
  position: relative;
  width: 400px;
  height: 40px;
  background-color: #149fee;
  border: 1px solid #149fee;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  border-radius: 10px;
  background-size: 42px 42px;
  background-image: -webkit-linear-gradient(-45deg, transparent 0px, transparent 12px, #15d1f9 14px, #15d1f9 30px, transparent 30px, transparent 42px, #15d1f9 42px);
  background-image: -moz-linear-gradient(-45deg, transparent 0px, transparent 12px, #15d1f9 14px, #15d1f9 30px, transparent 30px, transparent 42px, #15d1f9 42px);
  background-image: -o-linear-gradient(-45deg, transparent 0px, transparent 12px, #15d1f9 14px, #15d1f9 30px, transparent 30px, transparent 42px, #15d1f9 42px);
  background-image: -ms-linear-gradient(-45deg, transparent 0px, transparent 12px, #15d1f9 14px, #15d1f9 30px, transparent 30px, transparent 42px, #15d1f9 42px);
  background-image: linear-gradient(-45deg, transparent 0px, transparent 12px, #15d1f9 14px, #15d1f9 30px, transparent 30px, transparent 42px, #15d1f9 42px);
  margin: 0 auto;
  -webkit-animation: loading 800ms linear infinite;
  -moz-animation: loading 800ms linear infinite;
  -ms-animation: loading 800ms linear infinite;
  animation: loading 800ms linear infinite;
}
.loading:before {
  position: absolute;
  top: 0;
  left: 0;
  content: '';
  width: 100%;
  height: 100%;
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  border-radius: 10px;
  background-image: -webkit-linear-gradient(180deg, #149fee, rgba(102, 189, 238, 0.4) 15%, transparent 70%, #149fee);
  background-image: -moz-linear-gradient(180deg, #149fee, rgba(102, 189, 238, 0.4) 15%, transparent 70%, #149fee);
  background-image: -o-linear-gradient(180deg, #149fee, rgba(102, 189, 238, 0.4) 15%, transparent 70%, #149fee);
  background-image: -ms-linear-gradient(180deg, #149fee, rgba(102, 189, 238, 0.4) 15%, transparent 70%, #149fee);
  background-image: linear-gradient(180deg, #149fee, rgba(102, 189, 238, 0.4) 15%, transparent 70%, #149fee);
}
@-webkit-keyframes loading {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 42px 0;
  }
}
@-moz-keyframes loading {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 42px 0;
  }
}
@-ms-keyframes loading {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 42px 0;
  }
}
@keyframes loading {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 42px 0;
  }
}

html:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" type="text/css" href="css/style.css"/>
</head>
<body>
<div class="loading_box">
    <div class="loading"></div>
</div>
</body>
</html>

以上代码复制可以直接运行！

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