Making Child Theme Subfolder

Hello,

I have made a working child theme for this which is working great! But I want to edit a few css items in the ‘bootstrap.min.css’ file that is located in the css folder. I have made the sub folder, and all included all of the files in it, in my child theme but when I try to edit anything it does not work.I’m not sure if its a problem with how I linked it or what.

Any help would be appreciated!

Thanks!