使用 CSS 使文档居中对齐。
<html>
<body @(5)="@(17);">
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
</body>
</html>
<html>
<body style="text-align:center;">
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
</body>
</html>
<html>
<body style='text-align:center;'>
<h1>This is a heading</h1>
<p>This is a paragraph.</p>
</body>
</html>