How to fix the sidebar, bootstrap3?

How to fix the sidebar, bootstrap3?
There is such chuseok code, how to fix sidebar col-md-3?
<div class="col-md-9"> Page </div> <div class="col-md-3"> Here for more inform., how to attach when you scroll to the bottom of the menu tried this - <div id="myAffix" data-spy="affix" data-offset-top="180"> but the column for high resolution n=rasteryalsya the full width. </div> </div>
July 8th 19 at 11:57
1 answer
July 8th 19 at 11:59
That material on this topic: Fixing when scrolling ยท Affix Bootstrap 3
Here is the editor with the HTML demo code:

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