Visual Studio 2010 Express does not recognize Bootstrap right

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Hello, I'm having a problem, I usually do sites in html / php and I'm migrating to ASP.NET, and I'd like to work with Bootstrap, however, it works when I debug the page but in the preview, that is, I can not rearrange the Designer, look at the images:

    
asked by anonymous 22.07.2017 / 01:07

0 answers