如何让父级div中的两个子级div一起居中

img

最好的就是用弹性盒子，margin值也可以

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box1{
            width: 200px;
            height: 200px;
            background: salmon;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
        }
        .box1>div{
            width: 80%;
            height: 80px;
            background: aqua;
        }

        .box2{
            width: 200px;
            height: 200px;
            background: salmon;

        }
        .box2>div{
            width: 80%;
            height: 80px;
            background: aqua;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div class="box1">
        <div>1</div>
        <br>
        <div>2</div>
    </div>
    <br>
    <div class="box2">
        <div>1</div>
        <br>
        <div>2</div>
    </div>
</body>
</html>

变为行内元素