I have a comic book site, http://hittingtreeswithsticks.com and want to maintain 100% width for my title (so it stretches 100% in any browser), but a fixed width for my content (you need to maintain a fixed width of 950 pixels).
So I put the header and footer in <div class="container-fluid">and the main content in <div class="container">for that.
I tested locally on IE9, Chrome and FireFox with a resolution of 1920 x 1080, and the title looked fine.

But when I tested on the smaller 1366 x 768 monitor, the title elements seemed to mix together.

In the header.php file, I have this setting (simplified) for the header logo and links
<div class="container-fluid">
<div id="header">
<div class="row-fluid">
<div class="span3 offset3">
<logo>
</div>
<div class="span1">
<comics link>
</div>
<div class="span1">
<about link>
</div>
And so on...
header.php <div class="container">, , , containter, container-fluid.
, ?
!