[css] Remove gutter space for a specific div only

Interesting...

Removing the gutter in Twitter Bootstrap's Default grid, that is, 940px wide. And that the default grid has a 940px wide container and has the bootstrap-responsive.css in it's stylesheet.

If I got your question right, this is how I did it...

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Stackoverflow Question</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="">

    <!-- Le styles -->
    <link rel="stylesheet" href="assets/css/bootstrap.css">
    <link rel="stylesheet" href="assets/css/bootstrap-responsive.css">

    <!-- HTML5 shim, for IE6-8 support of HTML5 elements -->
    <!--[if lt IE 9]>
      <script src="assets/js/html5shiv.js"></script>
    <![endif]-->




    <style type="text/css">
        #main_content [class*="span"] {
            margin-left: 0;
            width: 25%;
        }

        @media (min-width: 768px) and (max-width: 979px) {
            #main_content [class*="span"] {
            margin-left: 0;
            width: 25%;
            }
        }


        @media (max-width: 767px) {
            #main_content [class*="span"] {
            margin-left: 0;
            width: 100%;
            }
        }

        @media (max-width: 480px) {
            #main_content [class*="span"] {
            margin-left: 0;
            width: 100%;
            }
        }

        <!-- For Visual Aid Only -->
        .bg1 {
            background-color: #C2C2C2;
        }

        .bg2 {
            background-color: #D2D2D2;
        }
    </style>
  <body>
    <div id="wrap">
        <div class="container">
            <div class="row-fluid">
                <div class="span1 text-center bg1">01</div>
                <div class="span1 text-center bg2">02</div>
                <div class="span1 text-center bg1">03</div>
                <div class="span1 text-center bg2">04</div>
                <div class="span1 text-center bg1">05</div>
                <div class="span1 text-center bg2">06</div>
                <div class="span1 text-center bg1">07</div>
                <div class="span1 text-center bg2">08</div>
                <div class="span1 text-center bg1">09</div>
                <div class="span1 text-center bg2">10</div>
                <div class="span1 text-center bg1">11</div>
                <div class="span1 text-center bg2">12</div>
            </div>



            <div id="main_content">
                <div class="row-fluid">
                    <div class="span3 text-center bg1">1</div>
                    <div class="span3 text-center bg2">2</div>
                    <div class="span3 text-center bg1">3</div>
                    <div class="span3 text-center bg2">4</div>
                </div>
            </div>
        </div><!--/container-->
    </div>
  </body>
</html>

And the result is..

enter image description here

The 4 div span with no gutter will remain spanned for Small tablet landscape (800x600). Anything size smaller than that will collapse the 4 divs and it will be stacked vertically. Of course you will have to tweak it to fit your needs.

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