*{
	margin: 0;
	padding: 0;
	font-family: 'Ubuntu', sans-serif;
}

body{
	background-color: #fff;
	width: 100%;
	height: 100%;
}

#wrapper_menu{
	position: absolute;
	box-shadow: 0 0 3px rgba(0,0,0,0.5);
	overflow: hidden;
}

#cabecera{
 	background-color: #2287a8;
 	border-bottom: 1px solid #fff;
}

#cabecera p{
	display: block;
	position: absolute;
	font-weight: bold;
	color: #fff;
	text-shadow: 0 0 3px rgba(0,0,0,0.85);
}

.boton_menu{
	position: relative;
	float: left;
	background-color: #2287a8;
	cursor: pointer;
	transition-duration: 0.5s;
	border-bottom: 1px solid #fff;
}

.boton_menu:nth-of-type(3n+0){
	 border-right: 1px solid #fff;
	 border-left: 1px solid #fff;
}

.boton_menu:hover{
	position: relative;
	float: left;
	background-color: #114354;
	cursor: pointer;
}

.boton_menu p{
	position: absolute;
	display: block;
	color: #fff;
	text-align: center;
	font-weight: bold;
	text-shadow: 0 0 3px rgba(0,0,0,0.85);
}