I have tried so many ways from different sites, including adding the css to the Scripts Library/Scripts. Addinbg the script directly in the Seattle MasterPage via Seattle .html Tried to register it and got errors.
All I would love to do is be able to have the Master Page have the updated / overridden css info I have for the global left nav menu. Unfortunately I don't know how to use delegations or crate something from Visual Studio to fix it.
Please pardon someone real hard to learn. I just can't seem to get any scripts read of my master page. They are uploaded, published, etc.
Thank you in advance for your help.