Need advice on mobile layout?

Question

HTML

Hello. A question. I opened the pages according to the layout, initially the version for the mobile phone was everywhere 1 - 1 column.
I used bootstrap .col-xs-12
But there was a need to make changes so that at a small resolution there was 1 column, but if the device was turned over, there were 2 columns. How can this be implemented smartly?) Is there something for this in bootstrap itself?

Answer 1

.col-sm-6 not?
Well, either you go here and in the section "Media queries breakpoints" or "Grid system" you set the values ​​you need.