<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        *{box-sizing: border-box;}
        div{border: 1px solid black;}
        .wrapper{
            width: 300px;
            height: 300px;
            margin: auto;
            position: relative;
        }
        .box1{
            width:100px;
            height: 100px;
            position: absolute;
            top: 50px;
            left: 50px;
            background-color: pink;
        }
        .box2{
            width:100px;
            height: 100px;
            position: absolute;
            top: 100px;
            left: 100px;
            background-color: dodgerblue;
        }
        
    </style>
</head>
<body>
    <div class="wrapper">
        <div class="box1">
        </div>
        <div class="box2">
        </div>
    </div>
</body>
</html>

위로 올라오는 순서 바꾸기

1) 태그위치 바꾸기

2) z-index

 

z축은 앞뒤를 가르킴

        .box1{
            width:100px;
            height: 100px;
            position: absolute;
            top: 50px;
            left: 50px;
            background-color: pink;
            z-index: 1;
        }

        .box1{
            width:100px;
            height: 100px;
            position: absolute;
            top: 50px;
            left: 50px;
            background-color: pink;
            z-index: 1;
        }
        .box2{
            width:100px;
            height: 100px;
            position: absolute;
            top: 100px;
            left: 100px;
            background-color: dodgerblue;
            z-index: 5;
        }


margin을 사용하는 경우 주변이 밀리는 듯한 효과

 

positioning을 사용하면 개별적으로

 


 

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