纯CSS三多级导航菜单效果代码

纯CSS3多级导航菜单效果代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>Examples</title>
<meta name="description" content="">
<meta name="keywords" content="">
<link href="" rel="stylesheet">
<style type="text/css">

    body {
  background:#00CC99;
}

span.dropBottom,span.dropRight {
    display: block;
    box-shadow:inset 2px 0px 0px #FF9;
    position: absolute;
    left: 0px;
    width:100%;
    height: 100%;
    top: 0px;
}
span.dropBottom {
    box-shadow:inset 0px 2px 0px #FF9;
    position: absolute;
    width: 100%;
    bottom: 0px;
}

nav {
    display:table;
    margin:50px auto;
  box-shadow:0px 2px 0px #023333;
}
ul {
    margin:0;
    padding:0;
    list-style:none;
}

ul ul {
    opacity:0;
    position:absolute;
    top:160%;
    visibility:hidden;
    transition:all .4s ease;
    -webkit-transition:all .4s ease;
}
ul ul ul {
    top:0%;
    left:160%;
}
ul ul li:hover > ul {
    top:0%;
    left:100%;
    opacity:1;
    visibility:visible;
}
ul li:hover > ul {
    opacity:1;
    top:100%;
    visibility:visible;
}
ul li {
    float:left;
    position:relative;
}
ul ul li {
    float:none;
}
ul li {
    background-color:#009C75;
    cursor: pointer;
}
ul a {
    text-decoration:none;
    display:block;
    color:#FF9;
    padding:10px 15px;
    width:6em;
    text-align:center;
  font-family: 'Open Sans', sans-serif;
  text-shadow: 0px -1px 0px rgba(0,0,0,.2);
}
ul li:hover {
    background-color:#007373;
}
ul li a:hover {
    background-color:#007373;
}
</style>
</head>
<body>

<nav>
    <ul>
        <li><a href="#">Home</a></li>
        <li><a href="#">Tutorials</a><span class="dropBottom"></span>
            <ul>
                <li><a href="#">Design</a><span class="dropRight"></span>
                    <ul>
                        <li><a href="#">Photoshop</a></li>
                        <li><a href="#">Illustrator</a></li>
                        <li><a href="#">Web Design</a><span class="dropRight"></span>
                            <ul>
                                <li><a href="#">XTHML</a></li>
                                <li><a href="#">CSS</a></li>
                                <li><a href="#">JavaScript</a></li>
                            </ul>
                        </li>
                    </ul>
                </li>
                <li><a href="#">Articles</a></li>
                <li><a href="#">Interviews</a></li>
            </ul>
        </li>
        <li><a href="#">About</a></li>
        <li><a href="#">Contact</a></li>
    </ul>
</nav>

</body>
</html>
纯CSS三多级导航菜单效果代码

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