<div class="row bg">
  <div class="span10">

        <!-- Main hero unit for a primary marketing message or call to action -->
        <div class="sidebar">
            <div class="hero-unit">
                <h1>Join</h1>
                <p>This is a template for a simple marketing or informational website. It includes a large callout called the hero unit and three supporting pieces of content. Use it as a starting point to create something more unique.</p>
                <p><a class="btn btn-primary btn-large">Register Now &raquo;</a></p>
            </div>
        </div>

        <!-- Example row of columns -->
        <div class="row">
            <div class="span5">
                <div class="bot-pad">
                    <h2>We are Fun!</h2>
                    <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
                    <p><a class="btn" href="#">View details &raquo;</a></p>
                </div>
            </div>
            <div class="span5">
                <div class="right-pad bot-pad">
                    <h2>Learn more about yourself</h2>
                    <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
                    <p><a class="btn" href="#">View details &raquo;</a></p>
                </div>
            </div>
        </div>
    </div>
</div>

.bg
{
    background: url('/assets/img/grid.png');
    .border-radius(5px); //LESS mixin for creating border radius
}
.right-pad
{
    padding-right: 20px;
}

.bot-pad
{
    padding-bottom: 20px;
}

<div class="span5">
    <div class="well well-red">
        <!-- Your content -->
    </div>
</div>

.well-red {
    background-color: #ff0000;
}

<div class="container-fluid bg">
    <div class="row-fluid">
      <div class="span12">

            <!-- Main hero unit for a primary marketing message or call to action -->
            <div class="hero-unit">
                <h1>Join {site_name}</h1>
                <p>This is a template for a simple marketing or informational website. It includes a large callout called the hero unit and three supporting pieces of content. Use it as a starting point to create something more unique.</p>
                <p><a class="btn btn-primary btn-large">Register Now &raquo;</a></p>
            </div>

            <!-- Example row of columns -->
            <div class="row-fluid">
                <div class="span6">
                    <h2>We are Fun!</h2>
                    <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
                    <p><a class="btn" href="#">View details &raquo;</a></p>
                </div>
                <div class="span6">
                    <h2>Learn more about yourself</h2>
                    <p>Donec id elit non mi porta gravida at eget metus. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus. Etiam porta sem malesuada magna mollis euismod. Donec sed odio dui. </p>
                    <p><a class="btn" href="#">View details &raquo;</a></p>
                </div>
            </div>
        </div>
    </div>
</div>

.bg
{
    padding: 20px;
    background: url('/assets/img/grid.png');
}