W3School TIY
编辑您的代码：
<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>
查看结果: