I attached sample content and master pages and a UserControl with the RadNavigation using Silk skin. Please modify them so the issue is reproduced and post your modifications. If you are applying custom CSS add it if it is needed for replicating the behavior.
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Still big problem with the font in sub menu.
Bootstrap works, now default in web.config. but 80% of all skins do i have problem with. You can test your WebUserControl.ascx from TestFont.zip here. http://www.avaudden.se/test/Default.aspx
I use App_Themes, you found it here: http://www.avaudden.se/App_Themes/gray/standard.css
Suggested action of my problem? I want to use Telerik skin....
answered on 24 Nov 2016, 12:09 PM
Thank you for the additional information provided.
As you can see in the following screenshot the sub-menus are rendered outside the main Navigation div element and outside the div with id pagewrap you apply the HelveticaNeue-Light font to. And since the sub-menus are not placed in the div the font is not applied to them. In order to apply it you can add the sub-menus class (rnvSlide) to your CSS rule: