Formating of site changes when I publish it, please help

Site URL: http://filmsintranslation.com

Hello,

First time here.

I have just created a website with squarespace and have noticed that, when I publish it, the formatting (width of text blocks, placing of  site title, color of symbols) has changed.

I am lost as to what causes this and have no idea how to fix it.

I haven't used any code, apart from a tiny sequence for the site title. Template is Pulaski.

Can anyone help with this?

Thanks in advance.

This is what I see with the preview function (arrow):

This is what I see when I publish it (formating is all messed up!): 

Hi. Have you solved it yet? Have you tried contacting Squarespace Customer Care yet? If they can't help, let me know, we will check it again