Mysterious whitespace in between Bootstrap2 Navbar and row underneath

Question

I am using Bootstrap's Navbar and Bootsrap's grid to display a Navbar with a image immediately underneath the Navbar. However, for some reason there is whitespace between this Navbar and the image. When I use firebug to investigate the location of the whitespace, it looks like the Navbar is top-aligned within its containing . I have tried to fix this by using CSS to bottom-align the navbar, to no avail.

How can I eliminate this whitespace?

<!-- Top Navigation Bar -->
<div class="row" id="rowTopLinkNavBar">
    <div class="span6 offset3" id="divTopLinkNavBar">
        <div class="navbar" id="topLinkNavBar">
            <div class="navbar-inner" style="font-size: 16px;">
                <ul class="nav">
                    <li class="active"><a href="#">Home</a></li>
                    <li class="divider"><a href="#">PROJECTS</a></li>
                    <li class="divider"><a href="#">ABOUT US</a></li>
                    <li class="divider"><a href="#">THE TEAM</a></li>
                    <li class="divider"><a href="#">EVENTS</a></li>
                    <li class="divider"><a href="#">MEETINGS</a></li>
                    <li><a href="#">RESOURCES</a></li>
                </ul>
            </div>
        </div>
    </div>
</div>

<!--Background Image-->
<div class="row" id="rowBackgroundImg">
    <div class="span6 offset3" id="backgroundImg">
    <!-- background image is set in CSS -->
    </div>
</div>

Here is my desperate attempt at fixing this issue using CSS:

#backgroundImg
{
    color: #ff0000;
    background-color: #000000;
    /*width: 709px;
    height: 553px;*/
    background: url('../images/someImage.jpg') no-repeat;
    background-size: 100%;
    height: 700px;
    border-radius: 0px;
    background-position: center;
    vertical-align: top;
    background-position: top;
}



#divTopLinkNavBar
{
    vertical-align: bottom;
}

#topLinkNavBar
{
    padding-bottom: 0px;
}
#rowBackgroundImg
{
    padding-top: 0px;
}

.navbar
{
    vertical-align: bottom;
}

Answer 1

You may want to override the margin-bottom: 20px from navbar :

.navbar {
    margin-bottom: 0;
}

Something like that : http://jsfiddle.net/q4M2G/ (the !important is here just to override the style of the CDN version of bootstrap I'm using in the jsfiddle but you should not need to use it if your style correctly overrides bootstrap styles)