Yes, I understand friend but in reality what file is? ???
Mulatin,
Because the code you're looking for is unique to your installation. You are going to have to do the work to find this. If I were to guess where this change took place I would say on the _Root.cshtml or Home\Index.cshtml pages. All we can do on the forum is guess. You need to either open the project in visual studio or use the windows search functionality to find a file with the phrase ".Style1" in it.