tianyunperfect
/
web-base--


			
				
					
						
						
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							<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <style>
        body {
            height:1000px;/*让窗体出现滚动条*/
        }
        .fixed {
            position: fixed;
            left: 100px;
            right: 100px;
            top: 100px;
            bottom: 100px;
            width: auto;
            height: auto;
            border: 1px solid blue;

        }
        .absolute {
            position: absolute;
            left: 100px;
            right: 100px;
            top: 100px;
            bottom: 100px;
            width: auto;
            height: auto;
            border: 1px solid red;
        }
    </style>
</head>
<body>
<div class="fixed">fixed定位</div>
<div class="absolute">absolute定位</div>
</body>
</html>