I've been wondering what seems to be wrong in my cache.
I set this headers so that it will not cache contents on the website (html, css, php) files.
header('Cache-Control: no-cache, no-store, must-revalidate'); // HTTP 1.1.
header('Pragma: no-cache'); // HTTP 1.0.
header('Expires: 0'); // Proxies.
So I went on to clear cache first on my Mozilla, reload the page then got this:
Seems fine because status is 200 OK, now I edited the file style.css then do a refresh, here is the result:
It says 304 Not Modified. I am no expert but isn't that means it cache the file? Also, I edited style.css, and my changes didn't appear. Need to do a Ctrl+F5 to reset it. Why is that?