I followed a "How to Create a Blog With Joomla" article at https://www.joomlashack.com/blog/joomla-how-to/joomla-blog/ to set up a News blog page by using what seems to be a generic Joomla core function.
I'm using Letterpress V1.2.1 but I can't see how to get a horizontal separator line to appear between the 'blog' articles as (or even more prominent) shown in the source article after "Step#3" in the referenced article above.
I found the same type of question posted in 2012 but none of the suggestions seem to work when added to the Custom CSS section of my Letterpress style.
Any help gratefully received - please assume I'm a total amateur.