how can I make unsubscribe text center align?

is this an email or landing page?

It was for email. I just changed the admin settings of Email and it worked :)

Thanks,

You may want to think about removing the Unsubscribe text from the admin and keep it in the footer of your email as a global snippet, this way you have more control from a style perspective rather than Marketo adding it to the bottom of all emails by default.