Disabling the Default Theme
Explains how to disable the Lumo theme for an application.
Although not a recommended approach to styling Vaadin applications, the default Lumo theme can be disabled using the @NoTheme annotation. This is applied to the same class to which you would normally apply the @Theme annotation.
@NoTheme
public class Application implements AppShellConfigurator {
…
}With the Lumo theme disabled, Vaadin components will load with only the most basic CSS required for them to be functional.
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