lovecoding
/
W260426


			
				
					
						
						
							12345678910111213141516171819202122232425262728293031323334
							<!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>
        .box1{
            width: 200px;
            height: 200px;
            background-color: red;
            position:absolute;
            top: 0;
            left: 0;
            /* z-index 只有定位元素才有效 */
            /* z-index 调整定位层级，默认值为0 ，数字越大层级越高 */
            z-index: 1;
        }
        .box2{
            width: 200px;
            height: 200px;
            background-color: blue;
            position:absolute;
            top: 10px;
            left: 0;
            z-index: 2;
        }
    </style>
</head>
<body>
    <div class="box1"></div>
    <div class="box2"></div>
</body>
</html>