Stylizing accordion element - Replicating a Button + Slide Out

Greetings!

I'm planning to insert a gallery widget within an accordion element to hide the gallery until a visitor wants to view it. I'd basically like to make the accordion element have nothing to display except for the first button. Then once clicked the content will drop down and be displayed. Pretty much like a simple switch/toggle.

Come to think of it, is there a simpler way to accomplish this without even having to use the accordion element?

The screenshot shows what I had started with (green arrow) and the button above shows how I'd like for the button to view for the toggle/drop down.

Looking forward to seeing what you guys know of!

Much Love
Ciro Bey