[docs] css/rendering issue with 2.7.11 docs?

[Alexander Walters]

The names of modules in the side navigation show up with a white 
background, with light green text - which is not very readable.

http://i.imgur.com/Q7aV50r.png

http://i.imgur.com/VdsvBzH.png

I am using Firefox 42.0 on windows 10.