Can't modify a CSS class

Describe the issue or problem
I can’t modify a CSS class. I need to modify this specific file which is in lib/pkp/styles/form/form.less. After modifying it in “my” ojs the class seems to always come with the original value.

Steps I took leading up to the issue

  1. Modify the class .pkp_form .localization_popover in file lib/pkp/styles/form/form.less. For example, I want it to be:
	.localization_popover {
		display: none;
		position: static;
		padding: 0.5rem;
		background-color: @bg;
	}
  1. The page seems to never load this change.

What application are you using?
OJS 3.1.2.4

I can also modify this div directly to solve my initial requirement but I can’t find it in the source code.

Do you know where it is?

It is specifically the edit in “About the Journal”.

Also, I can’t simply add a stylesheet because that is for the site per se and not for the “settings”.

Fixed it. It was a problem with the apache server.