Check for last post in loop

I wonder if this is something you could solve with CSS alone. Do you think something like this would work?

post:last-child {
    border-bottom: 1px solid #ccc; (whatever)
}

in the foreach loop, you could use a counter variable and check against count( $lastposts )

or rewrite the loop with WP_Query(); https://pastebin.com/RvQVqWjg (untested)

https://codex.www.ads-software.com/Class_Reference/WP_Query

I overcame my problem by adding a

$count = 0;

outside my for each.

I then added this line where I wanted, or didn’t want, a <hr /> tag:

if( ($count + 1) < (count($lastposts)) ) { ?><div class="clear"><hr /></div><?php }

and then obviously added:

$count++

before the end of the foreach loop