[Support request] Blogs printing on home page – not correctly linked to or displayed properly

Are you referring to the featured posts section on the homepage?
Where each featured post has a transparent background, which then changes to a solid background color when you hover over the post?

If I have understood correctly and you want the featured posts to not be transparent, so you don’t see the page background behind them, please add this custom CSS to ‘Appearance’ > ‘Customize’ > ‘Additional CSS’:

.featured-post {
  background: #f9f9f9;
}

I don’t really understand what you mean when you say “selected by the right side bar or via any other method on the home page”. Could you please provide more information about what you want to achieve here?