animate 的使用背景图由大变小

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>css3 animation动画停留在最后一帧</title>
<meta name="viewport" content="width=width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<style type="text/css">

  body{margin: 0;}
  .over{
      1920px;
     height: 587px; 
	 overflow:hidden; //先将溢出的隐藏
	 position: relative;
	 z-index: 1
    }
	
	.m-test{
	height: 587px; 
    animation:moveBackground 6s;  //设置动画的时间
    background:url("") center center;//可以定义一个背景图
    animation-fill-mode: forwards;   //设置动画在最后一帧停止
    }

    @-webkit-keyframes moveBackground {
      0% { transform: scale(1.1, 1.1);}
      100% { transform: scale(1, 1);}
    }
    @keyframes moveBackground {
      0% { transform: scale(1.1, 1.1);}
      100% { transform: scale(1, 1);}
    }  
</style>
</head>
<body>
<div class="over">
<div class="m-test"></div>
</div>
<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.js"></script>
<script type="text/javascript">
</script>
</body>

</html>
animate 的使用 背景图由大变小

animate 的使用背景图由大变小
