Cloud9 does't work! why?

Rails
1

https://lh3.googleusercontent.com/-sXU7uI9Ba1k/VVWncHe-eoI/AAAAAAAABrc/z3ncG73KMsg/s1600/%25E4%25B8%258B%25E8%25BD%25BD.png
today,when I use cloud9. But it is so…

https://lh3.googleusercontent.com/-sXU7uI9Ba1k/VVWncHe-eoI/AAAAAAAABrc/z3ncG73KMsg/s1600/%25E4%25B8%258B%25E8%25BD%25BD.png

2

It looks like you have black text on a black background. Here is a clip
of your screenshot with the contrast blown out.

3

It can not be displayed in the classroom, when I got home it can use。。

在 2015年5月16日星期六 UTC+8上午10:07:02，matt写道：