[Plugin: Instapress] HELP! Image Container Code

I have deleted the original image container code on my site. I can’t seem to get it back. I have uninstalled the plugin, then re-installed and it is still showing up blank.

I really just need the code that was there at the time of install. I am trying to just remove the white border, and I can’t seem to find a solution. I am unsure as to where I add the code to get rid of the border, or what that code should look like. Any help would be greatly appreciated!

Thanks in advance.

http://ww.wp.xz.cn/extend/plugins/instapress/