Firefox ignoring alternative css?

[junipers]

Hi
here’s my site:

http://www.piantanatura.it

and the code:

<meta name=”viewport” content=”width=device-width, initial-scale=1″ />
<link rel=”stylesheet” type=”text/css” media=”(min-width: 640px)” href=”screen.css” />
<link rel=”stylesheet” type=”text/css” media=”(min-width: 640px) and (max-width: 799px)” href=”mobile_bg.css” />
<link rel=”stylesheet” type=”text/css” media=”(max-width: 640px)” href=”mobile_sm.css” />
<link rel=”stylesheet” type=”text/css” media=”(orientation: portrait)” href=”portrait.css” />
<link rel=”stylesheet” type=”text/css” media=”(orientation: landscape)” href=”landscape.css” />

Chromium takes the code and switched according to the viewport size.
Firefox, until recently, did the same.
I’m relatively sure that I did not change the code, so I’m thinking it might be a browser issue. But since I’m not a wiz in CSS, who knows.

Thanks for any help.
William

[junipers]

It’s the zoom.
When i zoomed out it went back to normal.
-W

[Author]

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