Float a menu in an bootrap page

We have a page on a Bootstrap site which features a menu on the left.  Currently the menu is fixed in that it scrolls up and off the screen as the user scrolls down the page.  We want the menu to instead "float" and stay visible as the user scrolls up and down the page.

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For Bootstrap you can use affix

You will need to adjust the value as this example is for a top menu...
<div data-spy="affix" data-offset-top="60" data-offset-bottom="200">
  the code menu here

Open in new window

Here is an example for left menu

Or you will need to use a JS script (there are plenty of Sticky srcipts)

here the one I use
General use

General use

This one is new and is for panel

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