Bootstrap navbar input field too narrow - html

Question

I have a bootstrap based html that looks the way I want in Bootply, but in my page the query field looks narrower than it should. I just don't know what is wrong.
Here is the code:
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<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="#">Link</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">Welcome <span class="caret"></span>
<ul class="dropdown-menu">
<li>Sair</li>
</ul></li>
</ul>
<form class="navbar-form" method="post">
<div class="form-group" style="display: inline;">
<div class="input-group">
<input type="text" class="form-control" placeholder="Busca" name="q">
<span class="input-group-addon"><span class="glyphicon glyphicon-search"></span></span>
</div>
</div>
</form>
</div>
<!--/.navbar-collapse -->
</div>
Here is the desired result:
Here is the real result:

Answer 1

What you're seeing the default behavior. You can easily adjust this to accommodate your needs though. Assign the form a new class, add the appropriate width and you may want/need to adjust the top position.
See working Snippet at Full Page.
#media (min-width: 768px) {
.navbar-form-fw {
width: 95%;
}
.input-group.input-group-fw {
top: 8px;
}
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"> <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="#">Link</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">Welcome <span class="caret"></span>
<ul class="dropdown-menu">
<li>Sair
</li>
</ul>
</li>
</ul>
<form class="navbar-form-fw" method="post">
<div class="form-group">
<div class="input-group input-group-fw">
<input type="text" class="form-control control-form" placeholder="Busca" name="q"> <span class="input-group-addon"><span class="glyphicon glyphicon-search"></span></span>
</div>
</div>
</form>
</div>
</div>
</nav>