How to totally remove loader line on top?

This should do it for you.

.pace-done .pace, .pace-inactive {
    display: none;
}

Hi
Thank you very much for so simple way.

But I was realized already my issue like this:

in the file /themes/boardwalk/js/pace.js
I changed in variable defaultOptions
startOnPageLoad: true
to
startOnPageLoad: false
that’s all

Also after this, I added/changed in same variable data like this:
ajax: false, // disabled
document: false, // disabled
eventLag: false, // disabled
elements: false

After this loader even not loading

• This reply was modified 6 years, 12 months ago by www.15.to.

Yes, you can do it that way too. The one thing to keep in mind though is that if you made the change directly to the Cubic theme files, the first time there is a theme update, it is going to override your changes. Normally I would suggest doing a Child Theme, but Cubic is already a Child Theme, and you can’t make a child of a child. You will likely have to redo your changes after each theme update.