NB css inconsistent behavior between ff and webkit

[ghost]

Chrome 25:

ff 19:

and ff with a css tweak to the notebook vbox elements:

as markdown:

#firefox with css tweak to IPython

display(HTML("""
<style>
.output.vbox {
width: 100%;
}
</style>

<div style='width:100%;height:100px;background:#aaa'>
That's better
</div>
"""))

[ghost]

Hopefully, didn't miss 13.2.

[minrk]

Applied to master with #3051, and 0.13.2 with #3052. Thanks!

[ghost]

great. close? I think you have a milestone policy...