lovecoding
/
web0715


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 400px;
            height: 400px;
            border:3px solid black;
            position: relative;
        }
        .box2{
            width: 100px;
            height: 100px;
            background-color:red;
            /* float: right; */
            /* relative 相较于自己进行定位 */
            /* position: relative;
            top:20px;
            left: 20px; */

            /* absolut 相较于最近已经定位的父元素 */
            /* position: absolute;
            right: 0;
            bottom: 0; */

            position: absolute;
            left: 0;
            top: 0;

            /* fixd 固定定位 相较于浏览器窗口 */
            /* position: fixed;
            right: 0;
            bottom: 0; */
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="box2"></div>
        <span>hello</span>
    </div>
</body>
</html>