White lines appearing on Chrome and Explorer for Windows

[Jessie_Yao]

This white line is appearing around each section of my site, but only on Chrome and Explorer on Windows desktop. On iOS devices, it doesn’t show at all. Any ideas to what might be causing this?
Thank you!

Mac:

Windows:

Live link: https://www.sparkno9.com/

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Here is my site Read-Only: LINK

[Romuald_Jay]

remove the overflow scroll

And have a closer look at the size element to fix things in the build

[Jessie_Yao]

Thank you! It worked!