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CSS3实现的动画效果下拉导航菜单效果

大家讲道理asal: 2016-11-09 17:14:531097semak imbas

CSS3实现的动画效果下拉导航菜单效果:
本章节分享一段代码示例，它实现了简单的下拉菜单效果。
但是下拉菜单具有3D旋转效果，代码实例如下:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>蚂蚁部落</title>
<meta name="keywords" content="" />
<style type="text/css">
*{margin:0 auto;}
body{
  background-color: #EEEEEE;
  font-family: Microsoft Yahei,Arial,sans-serif;
}
nav{
  width:100%;
  background-color:#455552;
  position:relative;
  width:650px;
  margin-top:100px;
}
.nav-ul{
  list-style:none;
}
.nav-ul>li{
  display:inline-block;
  position:relative;
}
.nav-ul a{
  text-decoration:none;
  color:#FFF;
  display:inline-block;
  padding:10px 20px;
}
.nav-ul a:hover{
  background-color: #1ABC9C;
}
.nav-ul a:hover+ul li{
  opacity:1;
  -webkit-transform: rotateY(0deg);
  transform: rotateY(0deg);
}
.nav-ul a+ul{
  list-style: none;
  position: absolute;
  transition: opacity 0.5s;
  -webkit-perspective:800;
  -webkit-transform-style: preserve-3d;
}
.nav-ul a+ul:hover li{
  opacity: 1;
  -webkit-transform: rotateY(0deg);
  transform: rotateY(0deg);
}
.nav-ul a+ul li{
  position: relative;
  left: -40px;
  opacity: 0;
  width: 150px;
  transition: transform 1.5s,opacity 0.8s;
}
.nav-ul a+ul a{
  display: inline-block;
  width: 75%;
  background-color: rgba(26,188, 156, 0.75);
}
.nav-effect-1{
  transform: rotateY(90deg) translateX(10px);
}
.nav-effect-2{
  transform: rotateY(120deg) translateX(20px);
}
.nav-effect-3{
  transform: rotateY(150deg) translateX(30px);
}
.nav-effect-4{
  transform: rotateY(180deg) translateX(40px);
}
.nav-ul a+ul a:hover{
  background-color: rgba(69,85, 82, 0.75);
}
</style>
</head>
<body>
<nav>
  <ul class="nav-ul">
    <li><a href="/">首页</a></li>
    <li>
      <a href="#">蚂蚁部落前端</a>
      <ul>
        <li class="nav-effect-1"><a href="#">JavaScript</a></li>
        <li class="nav-effect-2"><a href="#">JQuery</a></li>
        <li class="nav-effect-3"><a href="#">CSS</a></li>
        <li class="nav-effect-4"><a href="#">HTML</a></li>
      </ul>
    </li>
    <li>
      <a href="#">后端</a>
      <ul>
        <li class="nav-effect-1"><a href="#">Python</a></li>
        <li class="nav-effect-2"><a href="#">PHP</a></li>
      </ul>
    </li>
    <li>
      <a href="#">琐碎杂类</a>
      <ul>
        <li class="nav-effect-1"><a href="#">softwhy.com</a></li>
        <li class="nav-effect-2"><a href="#">Ajax</a></li>
      </ul>
    </li>
    <li>
      <a href="#">我的生活</a>
      <ul>
        <li class="nav-effect-1"><a href="#">College</a></li>
        <li class="nav-effect-2"><a href="#">Review</a></li>
        <li class="nav-effect-3"><a href="#">Sentiment</a></li>
      </ul>
    </li>
    <li>
      <a href="#">关于我</a>
      <ul>
        <li class="nav-effect-1"><a href="#">蚂蚁部落</a></li>
        <li class="nav-effect-2"><a href="#">留言板</a></li>
      </ul>
    </li>
  </ul>
</nav>
</body>
</html>

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