Problema .navbar-collapse

Bom dia galera estou com um problema no meu .navbar-collapse quando o clico para aparecer ele esta ficando abaixo no banner principal e não pega a pagina toda não consigo acertar ele olha meu código:

<!--Inicio Nav-->

<nav class="navbar navbar-default">
 <div class="container-fluid">
 <div class="col-sm-12">
 <!-- 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" aria-expanded="false">
 <span class="sr-only"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 <span class="icon-bar"></span>
 </button>
 </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><a href="#"><span class="glyphicon glyphicon-home" style="padding: 0px 10px"></span>Home</a></li>
 <li><a href="#"><span class="glyphicon glyphicon-info-sign" style="padding: 0px 10px"></span>A Empresa</a></li>

 <li class="dropdown">
 <a href="#" class="dropdown-toggle" data-toggle="dropdown"
 role="button" aria-expanded="true">
 <span class="glyphicon glyphicon glyphicon-th" style="padding: 0px 10px"></span>
 Persianas <span class="caret"></span></a>
 <ul class="dropdown-menu" id="persinas">
 <asp:DataList ID="itemPersianas" RepeatColumns="1" runat="server">
 <itemtemplate>
 <li><span style="padding-left:15px;"></span><a href="produtos.aspx?ProdutosId=<%# Eval("MenuId")%>">
 <%# Eval("Titulo") %>
 </a></li>
 </itemtemplate>
 </asp:DataList>
 </ul>
 </li>
 <li class="dropdown">
 <a href="#" class="dropdown-toggle" data-toggle="dropdown"
 role="button" aria-expanded="false">
 <span class="glyphicon glyphicon-th-large" style="padding: 0px 10px"></span>
 Cortinas <span class="caret"></span></a>
 <ul class="dropdown-menu" id="cortinas">
 <asp:DataList ID="itemCortinas" RepeatColumns="1" runat="server">
 <itemtemplate>
 <li><span style="padding-left:15px;"></span><a href="produtos.aspx?ProdutosId=<%# Eval("MenuId")%>">
 <%# Eval("Titulo") %>
 </a></li>
 </itemtemplate>
 </asp:DataList>
 </ul>
 </li>
 <li><a href="#"><span class="glyphicon glyphicon-globe" style="padding: 0px 10px"></span>Parceiros</a></li>
 <li><a href="#"><span class="glyphicon glyphicon-envelope" style="padding: 0px 10px"></span>Contato</a></li>
 </ul>
 <form class="navbar-form navbar-right" runat="server" role="search" action="#" method="get" id="BuscaForm">
 <div class="input-group">
 <asp:TextBox ID="BuscaTextBox" runat="server" class="form-control" placeholder="Pesquisar produtos" name="BuscaTextBox" style="padding:6px 6px;"></asp:TextBox>
 <div class="input-group-btn">
 <button class="btn btn-default" type="submit"><i class="glyphicon glyphicon-search"></i></button>
 </div>
 </div>
 </form>
 </div>
 </div>
 </div>
</nav>

<!--Fim nav-->

meu css:

/* navbar
/ barra de menu principal /

.navbar a{

 color: #fff;
}

.navbar a:hover{

 color: #333;
}
.navbar-default{
	background: -moz-linear-gradient(top, #CCC 80%, #fefefd 100%); /* FF3.6+ */
	background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#f2f2f1), color-stop(100%,#fefefd)); /* Chrome,Safari4+ */
	background: -webkit-linear-gradient(top, #CCC 80%,#fefefd 100%); /* Chrome10+,Safari5.1+ */
	background: -o-linear-gradient(top, #CCC 80%,#fefefd 100%); /* Opera 11.10+ */
	border-radius:0px;
 height:30px
}

.navbar-default .navbar-nav > li > a{

	color:#fff;
}

.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {

	background-color:#333;
	color:#fff;
}

.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus{

	background-color:#333;
	color:#fff;
}

.navbar-default .navbar-nav > .open > a,
.navbar-default .navbar-nav > .open > a:hover,
.navbar-default .navbar-nav > .open > a:focus{

	background-color:#333;
	color:#fff;
}
#cortinas{
 width: 70px;
 margin-left:-10px;
 border-radius: 10px;
 box-shadow: 5px 5px black;
}

#cortinas li {

 width: 100%;
 padding-bottom:05px;
}
#persinas{
 width: 230px;
 margin-left:-30px;
 border-radius: 10px;
 box-shadow: 5px 5px black;
}

#persinas li{

 padding-bottom:10px;
}

.navbar-nav > li > .dropdown-menu{
background: -webkit-linear-gradient(top, #CCC 95%,#fefefd 100%); / Chrome10+,Safari5.1+ /

	color:#000;
 font-size: 12px;
}

/ mobile version /
.navbar .navbar-collapse {
background: -webkit-linear-gradient(top, #CCC 95%,#fefefd 100%); / Chrome10+,Safari5.1+ /
}
.navbar.navbar-default .nav-collapse {
background: -webkit-linear-gradient(top, #CCC 95%,#fefefd 100%); / Chrome10+,Safari5.1+ /
}
.btn.btn-circle {

 border-radius: 50px;
}

.btn.btn-outline {

 background-color: transparent;
}