Bootstrap: link or file?

Question

Can you explain me which way is better: download bootstrap file or just add link?

Answer 1

If you use a link, it's simpler, but one day the file might not be available anymore and so your program doesn't look as it is supposed to. Or if your project is on your pc, it will only load bootstrap if it is connected to internet.

If you download it, it's a little bit different, but unless you delete it, it will always be there.