How to give blurry background to a element?

Is there any way to give a blurry effect to an element’s background like the blur backgrounds stated in the below images -

I want to give blurry effect to the background of my app’s side menu and custom alerts.

May be setting the background image of an arrangement to a desired blurred image will work

But the background behind the side menu changes. So the menu background has To be Same like the backfround image of the active arragement.

You can set background color To white ans set occupacy To a value. #FFFFFF50