Bootstrap does not have a `col-xl-3` we would need to write it ourselves.

[MicFin]

Suggesting change from:

Lets get some firsthand experience writing Boootstrap it. Using the documentation we discussed earlier write a simple grid in the index.html file located in this repo. Make use of col-xs, sm, md, lg and xl.

to removing xl, adding code style, and being more specific for how to use col-xs-# to match bootstrap documentation.

Lets get some firsthand experience writing Boootstrap it. Using the documentation we discussed earlier write a simple grid in the index.html file located in this repo. Make use of col-xs-#, col-sm-#, col-md-#, and col-lg-#.