Since I can't see your project file, Byron, I don't know what you may have done. Attached is a quick replica of part of your project. To make the buttons appear at the bottom of equal height containers, please observe the settings for the containers with the class 'container-1', and the button inside them.

Thanks Inger - working on this

Using bootstrap v4 this is very easy to do!
It is a new feature in CARDS called card groups and card decks

https://v4-alpha.getbootstrap.com/components/card/#card-groups

Using bootstrap v3 this is more of a challenge
You could use the panels component and use RSD to adjust things
It will involve using custom classes (you may want to use flex here if you want)

http://getbootstrap.com/components/#panels