[frontend] Make thank_you_for_your_order message much smaller
[frontend] Make thank_you_for_your_order message much smaller

It's not a header, just a notice. It doesn't need to be as big as the order number.

yomishra/pce,yomishra/pce,dotandbo/spree,yomishra/pce,dotandbo/spree,Mayvenn/spree,Mayvenn/spree,dotandbo/spree,dotandbo/spree,Mayvenn/spree,Mayvenn/spree