Changing the thickness of the section border

Hi! I am trying to figure out how I can adjust the width/thickness of all of the section borders including the header border. I selected the "small" option, but I would like for it to be thinner. I think it is currently at 2px.

pw: hello

Hi,

Can you share link to your site? We can check easier

Sorry! I did share it, but I think because it expired, it didn't work. Here it is corn-mayflower-3mtr.squarespace.com

Hi,

Currently It is 1px

Hi @tuanphan thank you! What if I want make them all the same thickness as the one in the header? That one looks thinner than the others.

I have no idea to deal with this. But you can use this custom code (Design > Custom CSS) to add border between sections, instead of using option when edit section

article section {
    border-bottom: 1px solid black;
}
article section:first-child {
	border-top: 1px solid black;
}