×

×

<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>

不正确

点击 这里 再试一次。

正确！

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