#navigation.fixed{
	position:fixed;
	width:100%;
	top:0;
	background-color:green;
	height:45px;
	color:white;
	}

#navigation{
position:absolute;
background-color:green;
width: 100%;
height: 45px;
color:white;
}

#nav-wrapper{
width: 1000px;
margin: 0 auto;
text-align: left;
}

#navigation ul{
list-style-type: none;
padding: 0;
margin: 0;
}

#navigation ul li{
display: inline-block;
color: green;

}

#navigation ul li:hover{
background-color: blue;
}

#navigation ul li a, visited{
display: block;
text-decoration: none;
}

#navigation li{
width: 20%;
text-align:center;
font-size: 20px;
width: 150px;
height: 45px;
background-color:white;
}

li{
text-align:center;
}

#navigation a{
top: 10px;
color: green;
vertical-align: middle;
}



(HTML)
<div id="navigation">
<div id="nav-wrapper">

	<ul>
		<li><a href="">Startseite</a></li>
		<li><a href="">laksdfjlas</a></li>
		<li><a href="">lsadkfjask</a></li>
		<li><a href="">askldfjasd</a></li>
		<li><a href="">askldfjasd</a></li>
	</ul>
</div>
</div>