编辑下面的代码:【加编码】
<html> <body> <details> <summary>Copyright 1999-2011.</summary> <p> - by Refsnes Data. All Rights Reserved.</p> <p>All content and graphics on this web site are the property of the company Refsnes Data.</p> </details> <p><b>Note:</b> The &amp;lt;summary&amp;gt; tag is currently supported only in Chrome and Safari 6.</p> </body> </html>
结果: 【此窗口】 帮助?
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