这是由 .NET CSS 隔离功能引起的,该功能最初是为 Blazor 设计的: https://learn.microsoft.com/en-us/aspnet/core/blazor/components/css-isolation?view=aspnetcore-7.0
但是,它也已添加到 .NET MVC 中。进一步阅读:https://www.mikesdotnetting.com/article/355/css-isolation-in-razor-pages