Swap 2 column stacking order at small scrn- Bootstrap push pull class or float fix?

Question

No matter what I do I can\'t get the right column to push over and stack first at 100% width/small scrns. I tried col-xs-pull/push-12 or col-xs-pull/push-0. I also tried messing

Answer 1

If you go with a "mobile first" approach, you put the r-column first in your marking and then use push/pull accordingly

 
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http://www.bootply.com/121630