Been looking on the web, but it seems like I'am the only one who has this problem.
It seems to me that the
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
Only works with Google Chrome, but doesn't on Firefox (both in Device mode).
Anyone know the reason for this, and perhaps a solution?
Firefox has support for viewport meta tag in their mobile version 1.1 onwards. Can you try after removing the "user-scalable" attribute
<meta name="viewport" content="initial-scale=1, maximum-scale=1">
My guess is this user-scalable attribute is not supported and causing problem.