[Resolved] Adding text directly above wp-show-posts box

I am trying to add text directly above my wp-show-posts box. I have added the box to my static front page using a short-code.

Here is my current customized CSS code:

.wp-show-posts {
      border: 1px solid #000;
	    padding: 20px;
}

This code creates a solid border around wp-show-posts. On the top of that box, right above the solid black line, I would like to add text that says “Recent Articles”.

What is the best way to accomplish this?
Thank you!