Ok, after the comment below, I have a better idea what you are looking for, with the caveat of the container div's requiring 208px. I don't think that margin: auto will here to center all three in a group, so I propose float: left and use jQuery to calculate #content div, subtract .container widths, and divide by two to get left margin for the left-most .container div.
.container {
width:208px;
float:left;
padding:0;
margin: 0 auto;
text-align:center;
background-color: #cccccc;
}
.container p {
text-align:justify;
padding: 20px 10px 20px 10px;
}
$(document).ready(function(){
var w = $('#content').width();
var calw = (parseInt(w) - (208*3))/2;
$('#left').css('margin-left',calw+'px');
});
<div id="content">
<div class="container" id="left">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
<div class="container">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
<div class="container">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
</div>
EDIT
To take into account the fixed-width 208px div containers, I think the easiest way to do this would be to use a little bit of jQuery:
$(document).ready(function(){
var w = $('#content').width();
var calw = (parseInt(w) - (208*3))/2;
$('#left').css('margin-left',calw+'px');
});
Here's a jsfiddle to demonstrate the effect (updated with the above).
Of course, at this point, you might very well be better off using a container div with a margin auto applied to it, and a width of the 3 contianer div's you have with it. Of course, this approach causes problems in IE due to a bug in the way margin: auto is handled.
.container2 {
width:208px;
float:left;
padding:0;
margin: 0 auto;
text-align:center;
background-color: #cccccc;
}
.container2 p {
text-align:justify;
padding: 20px 10px 20px 10px;
}
#content2 {
width: 624px;
background-color: #ccccaa;
margin: 0 auto;
}
<div id="content2">
<div class="container2">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
<div class="container2">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
<div class="container2">
<h3>COLLECTIONS</h3>
<p>blahblah</p>
</div>
<br style="clear: both;"/>
</div>
Showing both.