Cant get this to work perfectly with Bootstrap and grids

[pkasson]

The demo in codeine shows how easy it is to setup two div's and have this tool resize things, and it works great.

When applying to Bootstrap and grids, I cant seem to get it to split two div's 50% with a splitter in the middle and allow for it to resize. What I get instead, using the example CSS in the codepen demo, is each div being about 50% of the width of the screen. The resize works, but it is all wonky.

Does this work with Bootstrap and column grids ?