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<html>
<head>
<style type="text/css">
h1.visible {visibility:visible}
h1.invisible {visibility:hidden}
</style>
</head>
 
<body>
<h1 class="visible">这是可见的标题</h1>
<h1 class="invisible">这是不可见的标题</h1>
</body>
 
</html>
 

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