How to centre a button image using generated Paypal code

Hello I am only new to S2Member and have been searching for an answer but could not find it. I would be so grateful if someone could help.

I am using S2 member free so far until I learn how it works properly but intend on buying the Pro version ASAP.

When I generate Paypal button code the generated button won’t centre my button image on a page. I’ve tried adding centre tags etc but it won’t work.

Please, how can I centre a button image generated in this way? It always appears on the left. Does anyone have an example please?

Many thanks and best regards
Paul.

Can you provide a link to the page where your button is?