Constant NAVIGATION_MENU_VIEWPORT 

pub const NAVIGATION_MENU_VIEWPORT: &str = "origin-top-center bg-popover text-popover-foreground data-[state=open]:animate-in \
                              data-[state=closed]:animate-out data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-90 \
                              relative mt-1.5 h-[var(--radix-navigation-menu-viewport-height)] w-full overflow-hidden \
                              rounded-md border shadow md:w-[var(--radix-navigation-menu-viewport-width)]";