Answers for "react scroll hide header"

how to hide header in react navigation

<Stack.Navigator
  screenOptions={{
    headerShown: false
  }}
>
  <Stack.Screen name="route-name" component={ScreenComponent} />
</Stack.Navigator>

react hide scrollbar

*{
  -ms-overflow-style: none;
}
::-webkit-scrollbar {
  display: none;
}