keldaryn on "custom css doesn't load (on some computers)"

Hello everyone,

Im trying to give my ".site-header.fixed" a "position:relative"
I wrote:
#masthead {position:relative !important;}
.site-header.fixed {position:relative !important;}

However, it does work on my computer, but at least not 2 others, my CSS just doesn't appear when inspecting element(other lines of the same CSS file load somewhere else on the page however... which it has been loaded... in some ways...)

Here's an exemple of a problematic page:

Is anyone can give me an idea on this ? I just started with CSS/HTML a few weeks ago and im quite stuck here.

Thank you in advance... i hope i was clear enough :)

Well it appear it was some kind of cache issue (even if i emptied it on all browsers as well as the server...)

That's (more or less) working now.