Espacio entre botonera que no quita

[alecalo]

Buenos días tengo la siguiente página

[URL="http://kyrovet.com/nk/"]http://kyrovet.com/nk/[/URL]

La botonera está hecha con listas, el problema es que entre la cabecera y la botonera me queda un espacio que de ninguna forma he podido quitar, agradezco me ayuden.

Código CSS.

Código:

body {
	background: url(../imagenes/granja.jpg) no-repeat top center fixed;
	background-size: cover;
	-moz-background-size: cover;
	-webkit-background-size: cover;
	-o-background-size: cover;
	margin: 0px;
}
.header
{
	height: 176px;
	width: auto;
	box-shadow: 2px 2px 3px #F1F1F1;
	-webkit-box-shadow: 2px 2px 3px #F1F1F1;
	-moz-box-shadow: 2px 2px 3px #F1F1F1;
	margin-bottom: 0px;
	background-color: rgba(255,255,255,0.6);
	
}
.header #contenedor_header {
	width: 1024px;
	margin-right: auto;
	margin-left: auto;
	height: 176px;
	background-color: #FFF;
	margin-bottom: 0px;
}
.header #contenedor_header #menu_navegacion {
	color: #8C8C8C;
	position: absolute;
	margin-top: 35px;
	width: auto;
	font-family: Tahoma, Geneva, sans-serif;
	font-size: 10px;
	text-shadow: 1px 1px 0px #FFFFFF;
	margin-left: 20px;
}
.header a:hover {
	color:#CCC;
	text-decoration:none;
}
.header a:visited {
	color:#093;
	text-decoration:none;
}
.header a:link {
	color:#063;
	text-decoration:none;
}
.header #contenedor_header #logotipo {
	height: 110px;
	width: 274px;
	margin-top: 45px;
	margin-left: 700px;
	position: absolute;
}
.header #contenedor_header #eslogan {
	font-family: big_noodlettf, big_noodleeot, big_noodlesvg, big_noodlewoff;
	font-size: 30px;
	position: absolute;
	margin-top: 95px;
	margin-left: 20px;
	color: #333;
	letter-spacing: 4px;
}
.botonera {
	width: 1024px;
	margin-right: auto;
	margin-left: auto;
	margin-top: 0px;
	padding-top: 0px;
	height: auto;

}
.botonera li {
	list-style:none;
}
.nav
{
	padding: 0px;
	height: 44;
	z-index: 2;
	margin-top: 0px;
	}
.nav li a
{
	font-family: big_noodlettf, big_noodleeot, big_noodlesvg, big_noodlewoff;
	font-size: 21px;
	background-color: #343434;
	text-decoration: none;
	color: #CCC;
	padding: 10px 12px;
	display: block;
	margin-left: 0px;
	}
	.nav li a:hover
{
	background: #999;
	color: #333;
	margin-bottom: 0px;
	margin-top: 0px;
	}
.nav > li
{
	float: left;
	padding-top: 0px;
	margin: 0px;
	}
.nav ul
{
	display:none;
	position:absolute;
	min-width: 140px;
	}
.nav li:hover > ul 
{
	display:block;
	z-index: 2;
	
}.contenedor {
	width: 1024px;
	margin-right: auto;
	margin-left: auto;
	height: auto;
	clear: both;
	background-color: #FFF;
	font-family: Tahoma, Geneva, sans-serif;
	font-size: 12px;
}
.buscador {
	height: 36px;
	width: 263px;
	float: left;
	background-color: #343434;
	font-family: "big_noodlettf", "big_noodleeot", "big_noodlesvg", "big_noodlewoff";
	font-size: 21px;
	color: #CCC;
	padding-top: 7px;
	padding-left: 10px;
}
.footer {
	width: 984px;
	clear: both;
	margin-top: 0px;
	margin-right: auto;
	margin-bottom: 0px;
	margin-left: auto;
	background-color: #666666;
	height: 260px;
	padding-right: 20px;
	padding-left: 20px;
	padding-top: 5px;
	padding-bottom: 30px;
}
.footer #derechos_reservados {
	font-family: Verdana, Geneva, sans-serif;
	font-size: 10px;
	font-style: italic;
	color: #CCC;
}
.footer #informacion {
	height: 210px;
	margin-bottom: 25px;
	margin-left: 20px;
}
.pieza1 {
	background-image: url(../imagenes/pieza1_footer.jpg);
	height: 60px;
	width: 1024px;
	margin-right: auto;
	margin-left: auto;
}
.contenedor #novedades {
	clear: both;
	height: 180px;
	background-color: #F1F1F1;
	margin-top: 10px;
	padding-top: 22px;
}
.contenedor #novedades #contenidos_desc {
	height: 160px;
	margin-right: 20px;
	margin-left: 20px;
	position: static;
}
.novedades1 {
	height: 160px;
	margin-right: 10px;
	margin-left: 10px;
	float: left;
	width: 225px;
	font-family: Tahoma, Geneva, sans-serif;
	font-size: 12px;
}
.icon1 {
	float: left;
	height: 65px;
	width: 65px;
	margin-top: 0px;
	margin-left: 0px;
}
.titulo_icono {
	font-family: "big_noodlettf", "big_noodleeot", "big_noodlesvg", "big_noodlewoff";
	font-size: 30px;
	padding-left: 10px;
	margin-left: 65px;
}
.contenido_icono {
	margin-top: 12px;
	margin-right: 5px;
	margin-bottom: 5px;
	margin-left: 5px;
	font-weight: bold;
	color: #696969;
	letter-spacing: 1px;
	text-align: justify;
}
.contenido_icono:hover {
	text-decoration:none;
}
.contenido2 {
	clear: both;
	margin-top: 30px;
	padding-right: 25px;
	margin-left: 25px;
	padding-bottom: 30px;
	height: auto;
	width: 1024px;
}
/* tooltip styling. by default the element to be styled is .tooltip  */
  .tooltip {
    display:none;
	background:transparent url(../imagenes/black_arrow.png)
    font-size:12px;
    height:70px;
    width:160px;
    padding:25px;
    color:#eee;
  }
    /* style the trigger elements */
  #demo img {
    border:0;
    cursor:pointer;
    margin:0 1px;
  }

Muchas Gracias.