Firefox ignoring max-width:320px media query

[mikes02]

I am using Firefox 9.0.1, I am working on a responsive layout and I have tested in IE 8, Google Chrome 16.0.912.63 m and Safari 5.0.5 all on a Windows 7 PC, for some reason Firefox is not applying the media query when I resize the window, I did a simple test:

@media screen and (max-width:320px)

{

#home-blog{display:none}

}

In my header I am including the following:

Any ideas?

[mikes02]

I actually did try that, didn’t change anything unfortunately.

[Rutger]

Can you try changing


@media screen and (max-width:320px)
{
#home-blog{display:none}
}


into


@media screen and (max-width:320px;)
{
#home-blog{display:none;}
}


[Josh]

I may be a few months late, but I actually encountered this today, and wanted to share the solution.

It’s actually not a CSS or CSS interpretation problem at all–it’s the way Firefox does (or doesn’t) resize the viewport. Unlike Google Chrome, and most other browsers, Firefox allows it’s toolbars to affect viewport size. The only way to make the viewport resize below the width of your toolbars in Firefox is to disable them. You’ll need to go to View > Toolbars and uncheck each. Then try resizing and watch your media queries take effect.

I hope I explained that right. It’s been a trying day!

[atelier13b]

Thanks !

I have had the same problem in Firefox 11-Ubuntu.

By disabling the navigation bar it’s OK.

Effective trick !

:-)

[dfogge]

i wouldnt worry about it too much on desktops. unless, of course, the client has a major issue with it. i think it should be fine since the 320px users are mostly going to be on mobile devices.

it might be a good idea to file this as a bug on mozilla’s dev site though.

[fesh27]

thanks to JoshBlackwood it solved my problem

[dilrajahdan]

Thanks JoshBlackwood – that worked a treat!

[mattrock]

Thanks from me as well, JoshBlackwood. Your suggestion did the trick for me! Cheers!

[fernandarizzo]

Thanks for sharing the trick JoshBlackwood.
It solved my problem! Cheers!

[jengraph]

Awesome! How do we get our toolbars to appear again, where is the View menu?

[codeline]

I think I’ve just found an easier way to solve this. On FF/Mac just type “about:config” into the address bar, search for “allow” and then look for “services.sync.prefs.sync.dom.disable_window_move_resize”. Set this to “true” and you should be fine :-) No need to hide the toolbars manually.

[Marvin El Marziano]

And to add detail to a very very ancient thread:

It seems FF still does this annoying thing, but disabling the toolbars is clearly not a solution (because you can’t disable your visitors’ FF toolbars; and you shouldn’t if you could0).

So, at the moment I’m writing, FF only does this check in pixels from what I can see. In other words, with your default fontsize of 16px, the original problem
@media screen and (max-width:320px)
{
#home-blog{display:none}
}
simply works by changing units to
@media screen and (max-width:20em)
{
#home-blog{display:none}
}… and no toolbars need disabling.

[Author]

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