Thanks for the answer.
Always nice to learn something new, but sadly this won't solve my problem. I 
will need both of the stylesheet files. Application developers shall bring 
their own css for their app and should not have to care about the design of the 
menu wrapped around. 
I'm looking for a way to seperate them so they don't get in each others way. 
Something like scoped css. 
But i think there won't be a wicket-way to solve this. It's more a css issue. 

> Am 14.05.2017 um 21:04 schrieb Martin Grigorov <>:
> Hi,
> Maybe a simpler solution would be to use custom IHeaderResponseDecorator
> that skips all CssHeaderItems contributed by the base module.
> If you can differentiate your application CssHeaderItems from the one from
> the base module, e.g. by package name, then I think this will work.
> See org.apache.wicket.markup.head.filter.FilteringHeaderResponse for
> inspiration.
> Martin Grigorov
> Wicket Training and Consulting
>> On Fri, May 12, 2017 at 10:36 PM, Claudia Hirt <> wrote:
>> Hi all,
>> is it possible to wrap a child page's markup inside an iframe?
>> The reason I want to do this:
>> My BasePage containing a header- and menu-panel is located in an artifact
>> used by several applications. These applications contain their own
>> stylesheets and I want to avoid side effects like css of application
>> affecting my header-panel.
>> I think the only way to solve this would be to have the whole application
>> page inside an iframe, because using CSS namespaces via IDs would be a
>> hudge effort and be to risky.
>> Thanks in advance!
>> Best regards,
>> Claudia Hirt
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