ShawnRong
10/14/2017 - 6:48 AM

Menu// source http://js.jirengu.com/hirasuxuva

.content {
  width: 600px;
  margin: 0 auto;
}

.navbar {
  background-color: #f1f1f1;
  list-style: none;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12)!important;
}

.clearfix {
  *zoom: 1;
}

.clearfix:after {
  content: '';
  display: block;
  clear: both;
}

.navbar>li {
  float: left;
  position: relative;
}

.navbar li a {
  display: block;
  color: #000;
  text-decoration: none;
  padding: 8px 16px;
}

.navbar li a:hover {
  color: #000;
  background-color: #ccc;
}

.navbar li .sub-menu {
  color: #000;
  background-color: #fff;
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

.navbar>li:hover .sub-menu {
  display: block;
}
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JS Bin</title>
<style id="jsbin-css">
.content {
  width: 600px;
  margin: 0 auto;
}

.navbar {
  background-color: #f1f1f1;
  list-style: none;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12)!important;
}

.clearfix {
  *zoom: 1;
}

.clearfix:after {
  content: '';
  display: block;
  clear: both;
}

.navbar>li {
  float: left;
  position: relative;
}

.navbar li a {
  display: block;
  color: #000;
  text-decoration: none;
  padding: 8px 16px;
}

.navbar li a:hover {
  color: #000;
  background-color: #ccc;
}

.navbar li .sub-menu {
  color: #000;
  background-color: #fff;
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

.navbar>li:hover .sub-menu {
  display: block;
}
</style>
</head>
<body>
  <div class="content">
    <ul class="navbar clearfix">
      <li><a href="#">首页</a></li>
      <li><a href="#">产品</a></li>
      <li><a href="#">更多</a>
      <div class="sub-menu">
        <a href="#">关于我们</a>
        <a href="#">加入我们</a>
      </div>
      </li>
    </ul>
  </div>


<script id="jsbin-source-css" type="text/css">.content {
  width: 600px;
  margin: 0 auto;
}

.navbar {
  background-color: #f1f1f1;
  list-style: none;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12)!important;
}

.clearfix {
  *zoom: 1;
}

.clearfix:after {
  content: '';
  display: block;
  clear: both;
}

.navbar>li {
  float: left;
  position: relative;
}

.navbar li a {
  display: block;
  color: #000;
  text-decoration: none;
  padding: 8px 16px;
}

.navbar li a:hover {
  color: #000;
  background-color: #ccc;
}

.navbar li .sub-menu {
  color: #000;
  background-color: #fff;
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  margin: 0;
  padding: 0;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

.navbar>li:hover .sub-menu {
  display: block;
}</script>
</body>
</html>