Can canadians use gift cards online?

If I am in Canada, Why can't I use my gift card online? The lady at my local sephora store said I could.

Answers: 2
Answered

2016 and this issue still exists.  Wow.

Answered

Are you kidding me? I am not impressed. Allowing payments through gift cards for online shopping should be a given in this day and age. On top of it, I found out I couldn't use my gift card till the very last stage in payment. I am utterly disgusted with this service.