how to add line between products for only mobile view

I would like to know the way to add a horizontal line between each products (STORE PAGE) for only mobile view.
Because the vertical gaps between products is not enough, It is not clear that which an image is belong to a caption on mobile view. (column is 1.)
So I want to add line between products to divide.

*I am using version 7.1

Thank you in advance.

Put the line in, and use css to hide the line above a certain screen width.

Or you could set the bottom border below a certain screen width.

@l_o_t_u_s this may help and if not let me know and I can do a dive into your site and get you the css you need to make this happen. 

https://support.squarespace.com/hc/en-us/articles/231746347-Styling-Products-Pages

@l_o_t_u_s Did you find a solution? I need the css code to hide those lines on desktop/iPad

16 hours ago, iamraag said:

@l_o_t_u_s Did you find a solution? I need the css code to hide those lines on desktop/iPad

If you share site url, we can help easier

@tuanphan I figured it out actually 🙂 Thank you!