The Spoiler Windows is aligned strangely, and it's quite rather bothering me. If it could be fixed I would appreciate it a lot, thanks! c;
It is because all block level things (spoilers, code, and quotations) within posts have a one hundred and forty pixel right margin by default in XenForo. This is because the user information on the left-hand side of the messages occupies one hundred and forty pixels of horizontal space; the intention is to centre the spoilers and quotations in the website, rather than centring them in the message. Having said that, I agree it looks odd and have changed it.