<!doctype html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no">
<meta name='apple-mobile-web-app-capable' content='yes' />
<meta name="format-detection" content="telephone=no" />
<meta http-equiv='Content-Type' content='textml;charset=UTF-8' />
<style>
/* Demo Styles */
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,form,input,table,tbody,p,th,td{ -webkit-text-size-adjust:none; margin: 0; padding: 0; border: none; -webkit-tap-highlight-color:rgba(0,0,0,0); font-size: 1em; font-family:"Microsoft Yahei","微软雅黑",Tahoma,Arial,Helvetica ,STHeiti; color: #4c4948; }
html,body{ min-height:100%; }
img,input,button,a,select,textarea{ margin: 0; padding: 0; resize:none; border:none; outline:none; }
ol,ul { list-style:none; }
h1,h2,h3,h4,h5,h6,p,em{ font-size:100%; word-wrap:break-word; font-weight: normal; font-style: normal; }
a:active, a:focus{ outline:none; }
button::-moz-focus-inner,input::-moz-focus-inner{ padding:0; border:0; }
table{ border-collapse:collapse; border-spacing:0; }
.clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; font-size:0; }
.clearfix{ zoom:1; }
a{ color: #4c4948; text-decoration: none; }
.img{ width: 190px; height: 120px; padding: 3px; border: 1px solid #ccc; position: absolute;z-index: 12; top: 50px; left: 50%;
margin-left: -95px; }
/*动画名字， 动画运行的时间，alternate平滑过渡， infinite是反复执行*/
.imgAnimation{
animation-name: imgAnimation;
animation: imgAnimation 2s alternate;
-webkit-animation: imgAnimation 2s alternate ;
-moz-animation: imgAnimation 2s alternate infinite;
}
@-webkit-keyframes imgAnimation{
0%{ left: -198px;top:500px;}
100%{ top: 50px; left: 50%;
margin-left: -95px;}
}
</style>
</head>
<body>
<div class="img imgAnimation"> <img class="" src="logo.png" /></div>
</body>
</html>
