changing title size in wpshow post

Hi

I'm using WP Show posts with my Generate Press site. There are 3 different wp show posts.
1) popular posts for my main home page w/ category "popular",
2) all show posts on my blog page w/ the category "news" and
3) show post "title only" w/ category "recent".

I want to put item 3 on the bottom of each blog page right after the line like "latest or related news:". That lets me auto add internal links to each post for recent or related articles and boost my SEO.

I can quickly change the post links in show post "title only" at the bottom of blog pages by changing which posts have category "recent" and I don't have to go to each post to do that.

My issue is that I can't modify the title font size between 3 different wp show posts.

The wp show posts isn't using the Content> Title element tag (p,h1-h6) and correcting for the font-size. I tried this with some success but can't distinguish between the 3 show posts.

body wpsp1836.wp-show-posts .wp-show-posts-entry-title
{
font-size: 14px;
line-height: 1.3em;
margin: 0;
}

.wp-show-posts .wp-show-posts-entry-title
{
font-size: 20px;
line-height: 1.3em;
margin: 0;
}

body .wp-show-posts .wp-show-posts-entry-title a {
font-size: 20px;
margin: 0px;
padding: 0px;
}

Any suggestion welcome. I'm very close to making it work and can't get that last css correct.

Thanks. Martha