Trendy Grid Lines

Hi, random question. I’m not working on one particular site, but for future reference, is SS capable of creating these cool, trendy grid layouts that I’ve been seeing everywhere? SS obviously offers horizontal lines, which is great. But the codes I’ve used for inserting vertical lines can be faulty. Is there a secret/easy way to add vertical lines or to create these cool grid designs? 

You could try this to get a very different layout, and then put in grid lines:
https://www.will-myers.com/products/p/build-grid-page-layouts-in-squarespace-workshop

Given that we can how have a full bleed grid to place blocks inside now with Fluid Engine, it shouldn't be too difficult to use CSS to add borders or outlines to any or all of them.

Couple of options that might be right for different situations, maybe?