块元素快速垂直居中对齐

8个月前发布

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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 {
            background: aqua;
            height: 500px;
            width: 500px;
            margin: auto;
        }

        body,
        html {
            height: 100%;
            width: 100%;
            display: flex;
        }
    </style>
</head>

<body>
    <div class="box">

        <h1>块元素</h1>
    </div>
</body>

</html>

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块元素快速垂直居中对齐

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