menue

Die index.html

<!DOCTYPE html>
    <head>
        <meta charset="utf-8">
        <title>CSS3 Dropdown Menu von designyourweb.info</title>
        <link rel="stylesheet" href="html.css">
        <link rel="stylesheet" href="style.css">
    </head>
    <body>
		<div id = "wrapper">
        	<nav>
        		<ul>
        			<li class = "cat1">
        				<a href="#">Home</a>
        			</li>
        			<li class = "cat2">
        				<a href="#">Über uns</a>
        				<ul>
        					<li><a href="#">Wer wir sind</a></li>
        					<li><a href="#">Was wir machen</a></li>
        					<li><a href="#">Unsere Ziele</a></li>
        					<li><a href="#">Unser Team</a></li>
        				</ul>
        			</li>
        			<li class = "cat3">
        				<a href="#">Leistungen</a>
        				<ul>
        					<li><a href="#">Webdesign</a></li>
        					<li><a href="#">Programmierung</a></li>
        					<li><a href="#">Online Marketing</a></li>
        					<li><a href="#">Suchmaschinenoptimierung</a></li>
        				</ul>
        			</li>
        			<li class = "cat4">
        				<a href="#">Referenzen</a>
        				<ul>
        					<li><a href="#">Webseiten</a></li>
        					<li><a href="#">Themes & Templates</a></li>
        					<li><a href="#">Plugins</a></li>
        				</ul>
        			</li>
        			<li class = "cat5">
        				<a href="#">Kontakt</a>
        				<ul>
        					<li><a href="#">Deutschland</a></li>
        					<li><a href="#">Amerika</a></li>
        					<li><a href="#">Spanien</a></li>
        				</ul>
        			</li>
        		</ul>
        	</nav>

            <div id = "content">
			<a href = "http://designyourweb.info/so-gehts-ein-schlankes-css3-
			dropdown-menu-erstellen/346">So gehts: Ein schlankes CSS3 Dropdown 
			Menu erstellen</a> 
			von 
			<a href = "http://designyourweb.info">designyourweb</a></div>
        </div>
    </body>
</html>
CSS3 Dropdown Menu von designyourweb.info

Die html.css

html {
    background-color: #EFEFEF;
}

a{
    text-decoration: none;
    color: #000;
}

div#wrapper {
    margin: 100px auto;
    width: 960px;
}

div#content {
    clear: both;

    margin-top: 100px;
}
Die style.css

nav {
    width: 960px;
}
nav ul {
    padding: 0px;
    margin: 0px;

    box-shadow: 2px 2px 2px #dfdfdf;
    -moz-box-shadow: 2px 2px 2px #dfdfdf;
    -webkit-box-shadow: 2px 2px 2px #dfdfdf;
}

nav ul:after {
    clear: both;
    content: " ";
    display: block;
    font-size: 0;
    height: 0;
    visibility: hidden;
}

nav ul,nav ul li{
    background-color: #FAFAFA;
}
nav ul li {
    list-style: none;
    float:left;

    border-right: 1px solid #dfdfdf;
}
nav ul li a {
    text-decoration: none;
    display: block;
    color: #333;
    padding: 14px 34px 14px 34px;

    transition: background 0.3s ease-out; /* explorer 10 */
    -webkit-transition: background 0.3s ease-out; /* chrome & safari */
    -moz-transition: background 0.3 ease-out; /* firefox */
    -o-transition: background 0.3 ease-out; /* opera */
}

nav ul li.cat1:hover a, nav ul li.cat1:hover > ul li a  {
    background-color: #E6DD00;
}
nav ul li.cat2:hover a, nav ul li.cat2:hover > ul li a  {
    background-color: #8CB302;
}
nav ul li.cat3:hover a, nav ul li.cat3:hover > ul li a {
    background-color: #008C74;
}
nav ul li.cat4:hover a, nav ul li.cat4:hover > ul li a {
    background-color: #004C66;
}
nav ul li.cat5:hover a, nav ul li.cat5:hover > ul li a {
    background-color: #332B40;
}

nav ul li:hover > a {
    color: #FAFAFA;
}
nav ul li:hover > ul {
    visibility: visible;
}

nav ul li ul{
    display: inline;
    visibility: hidden;
    position: absolute;
    padding:0px;
}
nav ul li ul li{
	float: none;
}
nav ul li ul li a {
    color: #FAFAFA;
}
nav ul li ul li a:hover{
	color: #333;
	background-color: #FAFAFA !important;
}