HTML, SaSS and JavaScript

I wonder.

I used the desktop-design.jpg as a background image for my website and putted the dev tools on 1440px in a responsive window, so it really is 1440px.

Then I made the complete design a 100% pixel perfect and matching the background completely. However, when I upload and connect my challenge, it doesn't show perfect. There are some margin/padding differences here and there, and I don't understand how this can be possible while on my local dev it did match.

Also, the font-size of the image titles aren't correct and to be honest, that is truly something I totally forgot to check on desktop.

Thnx for feedback!

Kind Regards, Daniel