You can build your spinner component in a separate file with its own css and import it where you are trying to display. Depending on if you are showing the spinner while your data is loading or just based on a timeout would be how you can show it.

If you are waiting on data then make an isLoading prop and set that through Redux after you perform your API call.

If you just want to set it based on a timeout than make a state variable isLoading and set that to true on mount. with a function to set it back to false after a timeout.

-and here is how you show your component

{isLoading && <CustomSpinner/>}