[twitter-bootstrap] Bootstrap 3.0 - Fluid Grid that includes Fixed Column Sizes

OK, my answer is super nice:

<style>
    #wrapper {
        display:flex;    
        width:100%;
        align-content: streach;
        justify-content: space-between;
    }    

    #wrapper div {
        height:100px;
    }

    .static240 {
        flex: 0 0 240px;
    }
    .static160 {
        flex: 0 0 160px;
    }

    .growMax {
        flex-grow: 1;
    }

</style>

<div id="wrapper">
  <div class="static240" style="background:red;" > </div>
  <div class="static160"  style="background: green;" > </div> 
  <div class="growMax"  style="background:yellow;"  ></div>
</div>

jsfiddle playground

if you wanna support for all browser, use https://github.com/10up/flexibility