Why is Bootstrap's DropDown not working?

Question

css

Hello. DropDown Bootstrap not working.
https://jsfiddle.net/LL84Lchy/1/
Yes, and I also inserted the code of examples - it did not work. Apparently a connection problem.
Or did I do something wrong with the bootstrap?
PS I don't want to use bootstrap buttons.
Thanks in advance

Answer 1

Have you connected js bootstrap?
" https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js... ">
you still need to include jquery, and before the bootstrap