Remove grey lines between sections

Hello, I am trying to remove the grey lines between sections as seen in the image below. I haven’t been able to find a solution, and have tried changing the margins/border color but it didn’t seem to work. How do I go about this? Thanks!

site: link

password: first

page: footer (homepage)

Go to your online store → customize -settings → custom css and paste this code there

.footer {
    border-top: unset;
}
.footer__content-bottom {
    border-top: unset;
}

I found you can also achieve this by going into Themes → Customise (your chosen Theme) → Theme Settings (the Cog icon top left) → Content Container - change the border thickness to 0px. Check if it effects any other content containers, but for me it got rid of the majority of grey lines between sections.