Help with a minor customisation of a MailChimp template

Hi, I have created a mailchimp template that looks like [login to view URL] but there is an issue when viewing on mobile (see attached) I want.. Our Weekly Update {DAY MONTH YEAR} ^ to be centered in the middle of the screen on mobile devices but on the same line left and right on computers etc and {ENTER RECIPE NAME} {MONTH DAY, YEAR} ^ to be centered in the middle of the screen on mobile devices but on the same line left and right on computers etc Please note this text is placeholder text and will typed over