Centering header/text is not responsive

I am centering headers as well as blocks of text on my site. However, when I view the site on my laptop, the header is not centered on the screen. It looks like it is centered for a smaller screen. How can I make the centering feature responsive to different screen sizes? Thank you.

Hello,

Can you please provide a link to your website and explain how you centered headers?

Kind Regards, Roman.

Here is my site: http://rlskgroup.com/. If you go to Our Services, the text takes up only 3/4 of the width of the laptop screen. The header, WELCOME is also not centered on the screen. It seems the text is tailored to a smaller screen. Please let me know what I need to change. Thank you.

Hello,

Please try to use Full width page template instead of Default Template for that page.

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.