This is great! I can't figure out how to nest containers though, is this supported?
[1] http://www.helloerik.com/the-subtle-magic-behind-why-the-boo...
I would like to know this as well...without the ability to create nested rows, I don't really see myself using this tool.
The nesting will actually "zoom" into the col you're putting it in and give you a new view, then you can zoom back out.
There IS a live HTML preview that you can actually see and drag your browser big and small.... but it's broke. Fixing it after work tonight.
rows will reset the col padding so nesting rows in cols will have the correct behavior.