I've updated the Zen Cart 2.0.0-alpha admin to use Bootstrap 5.3.2 (current release). IMHO, it's a shame to use BS3 which is obsolete when a new ZC version release is just around the corner.

I could really use a fresh pair of eyes to go over it and see if there's anything left to do, or could be done better. Please PM me for test site URL and login. Once I get confirmation it's OK, I'll move it to github. TIA