求助：有谁解决过微信内置浏览器不兼容浮动的

<!DOCTYPE HTML>

<html>

<head>

<meta charset="utf-8" />

<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />

<title>浮动测试</title>

<style type="text/css">

	#mcover {background: none repeat scroll 0 0 rgba(0, 0, 0, 0.7); text-align:right; display:block; height: 100%;left: 0; position: fixed; top: 0; width: 100%; z-index: 2000000;}

</style>



<meta name="description" content="" />

<meta name="viewport" content="width=device-width, initial-scale=1.0" />







</head>

<body>



	<div style="width:310px; height:1000px; margin:0px auto; border:1px #000000 solid">

	

		<div style="" onclick="document.getElementById('mcover').style.display='';" id="mcover"><img src="http://img.my.csdn.net/uploads/201401/11/1389420919_5249.png"></div>

		

	</div>



</body>

</html>