JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://twitter.github.io/bootstrap/assets/css/bootstrap.css">
<div class="container">
    <div class="row-fluid">
        <div class="span3">xx</div>
        <div class="span8 offset-1">yy</div>
        <div class="span3 offset-1">zz</div>
    </div>
</div>

CSS

/* What you need*/
.row-fluid .offset-1 {
    margin-left: -10.638297872340425%;
    *margin-left: -10.53191489361702%;
}
.row-fluid .offset-1:first-child {
    margin-left: -8.51063829787234%;
    *margin-left: -8.404255319148938%;
}

/*styling for better view*/
.span3 {
    background-color: rgba(100,100,100,0.4);
}
.span8 {
    background-color: rgba(0,255,100,0.4);
}
.container {
    max-width:500px;
}