This is kinda weird problem we came across with my friend. We located our site at network drive and tried to open it from there. All other browsers render this page just fine but IE (btw. why it's always IE? :) ) can't understand inline-block statement. But if I copy our file to my local drive there is no problem, IE renders everything just like other browsers. I tested this with IE7-9b.
This sounds like that problem - where IE switches rendering modes depending on where the page is located.
It's insane.
http://127.0.0.1/mysite/mypage.php <-- IE8 by default (updated!)
http://localhost/mysite/mypage.php <-- IE8 by default (updated!)
http://machinename/mysite/mypage.php <-- IE7 by default
http://192.168.100.x/mysite/mypage.php <-- IE7 by default
http://google.com/ <-- IE8 by default
So, because you're accessing your site via "network drive", IE is going into IE7 mode, and IE7 does not support inline-block
properly, hence your site does not render properly.
You can request IE8 to render your page in IE8 mode by adding this to your page:
<meta http-equiv="X-UA-Compatible" content="IE=8" />
Or, to request IE8 to use the most recent version of it's rendering engine (think IE9), you should use this:
<meta http-equiv="X-UA-Compatible" content="IE=Edge" />
Or, to use Chrome Frame instead if it's available:
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" />