My resource pack doesn't work

I don't know why my resource pack doesn't apply to my server I don't know why I think I did all of the steps well help

Here's the link to my resource pack:

https://www.dropbox.com/s/ja2bb6dj9cuvp9d/Halo%20resource%20pack.zip?dl=1

also i don't know if this is important but its on java and the version is 1.8.8