Plugin margin question

[Mike]

Brian,
It's my own plugin. I'm using margin On my div with the user interface selector for left (0 0),center (0 auto),right(). When right is selected I want it to align with the right side of the category. But I noticed using the sidebar redux you have to manually align it. Is there any way to align it without manually adjusting it?

[Brian]

A forum URL would be nice, as well as pointing out specifically what I need to be looking at.

[Mike]

test site

I'll leave the site out of maintenance mode.

I can get the user interface select to work left and center but I have to manually figure out the distance for right. Now that may work for a site with sidebar redux but what about sites without sidebars. I want to know if there is something I could do about that automatic like the other two.(left and center)