Problem with a custom template center in the responsive version

Hello everyone, my name is Diego and I’m taking my first steps in wordpress. My problem is this, I paid a company to focus the contents of my “About” page. Well, they have created a template called template center (tpl-center.php) that works perfectly both on PC and Mac

So far so good, the problem has arisen when I opened my wordpress with my iPhone, they knew in advance it was a responsive theme, but they have had not this in mind, so now all pages are fine (centered with respect to the logo of my page that is located up in the middle of the page: the midpoint of the slideshow coincides with the midpoint of my logo, pictures of my blog are also consistent with the midpoint of my logo…), except the page “about”, in which instead of matching the content with the midpoint of the logo, I need to scroll far away to the right leaving out the menus of the pages, the logo …

Anybody knows how can I do to preserving the template center on the original design for PC and Mac, it was not applied in the responsive version? (I guess in this way the content would focus because the distribution of page changes in this version). Or any other solution?

I can copy the css code of the template code and send images if you want to see the problem.

Many thanks and greetings from Spain!