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moonlight
/
test.html

<!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>
        .one{
            width: 120px;
            /* height: 300px; */
            border: 1px solid red;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            /* align-items: center; */
        }
        .two{
            height:100px;
            width: 100px;
            background-color: black;
        }
        .three{
            width: 100px;
            height: 100px;
            background-color: blue;
        }
    </style>
</head>
<body>
    <div class="one">
        <div class="two">1</div>
        <div class="three">2</div>
    </div>

</body>
</html>