position:fixed sidebar doesn’t fit on my little screen

[andylolz]

I have to zoom out to see the bottom of this sidebar:

[andylolz]

Refs #143.

[timgdavies]

Flagging to @ccmdesign as a snagging issue.

[Bjwebb]

Should now be fixed on http://org-id.guide/

[andylolz]

Looks good to me 👍