Flexbox Centered Working

by Dragonseer

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <style>
        html, body
        {
            height: 100%;
        }

        body
        {
            display: flex;
            align-items: center;
            justify-content: center;
        }
    </style>
</head>
<body>
    <h1>Centered</h1>
</body>
</html>