“CENTER_DIV” Ответ

CENTER_DIV

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css" rel="stylesheet"/>


<div class="container d-flex align-items-center justify-content-center">
        <div>
                <h1>You Div</h1>
            </div>
    </div>
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