How to Aline Trigger Image to the Right Without Boarder

As the title indicates. I’m having trouble with the code. I can create the image and have it expand and collapse content. However, I want it to be pushed automatically aligned with the right portion.

This code is what I got so far:
[expand title=”“]hidden content[/expand]

However, when I try to align the code right:
<p style=”text-align: right;”>[expand title=”“]hidden content[/expand]</p>

the image doesn’t appear any longer. However, the arrow does align right.

Also. I want to know how to get the boarder frame around the image to disappear. There are no options to take it off and the code doesn’t give me any thing to work with?