Remove space between navbar and header - html

Question

I have a weird margin below bootstrap navbar and I don't know how to remove it. Any solutions with manipulate with margin or padding doesn't working.
HTML
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="#"><span class="glyphicon glyphicon-home"></span></a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav">
<li class="active">Active example <span class="sr-only">(current)</span></li>
<li>Example 3</li>
<li>Example 2 </li>
</ul>
</div>
</div>
</nav>
<!-- HEADER -->
<div class="container-fluid" style="margin-top: -20px; margin-bottom: 25px;">
<div class="row">
<img src="http://thehrblog.ecornell.com/wp-content/uploads/sites/2/2013/04/communication.png" class="img-responsive">
</div>
</div>
CSS
.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus {
background-color: #007DBE;
color: #FFF;
}
Example is here: Jsfiddle (please resize 'Result' if menu in navbar is hidden).
I need to remove this space:
for get this:

Answer 1

The file navbar.less is adding a border on the navbar:
.navbar-fixed-top {
top: 0;
border-width: 0 0 1px;
}
So you can use this to reset:
.navbar-fixed-top {
border:0;
}
UpdatedFiddle

Answer 2

Change
.navbar-fixed-top {
border-width: 0 0 1px;
top: 0;
}
to
.navbar-fixed-top {
border-width: 0;
top: 0;
}