/* All */
.nav {
  width:1000px;
  margin: 0 auto;
  font-size: 15px;
  font-weight:bold;
}
.nav ul {
  *zoom: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  background: #fff;
}
.nav ul:before,
.nav ul:after {
  content: "";
  display: table;
}
.nav ul:after {
  clear: both;
}
.nav ul > li {
  float: left;
  position: relative;
}
.nav a {
  display: block;
  padding: 10px 20px;
  line-height: 1.2em;
  color: #000;
  border-left: 1px solid #fff;
}
.nav a:hover {
  text-decoration: none;
  background: #fff;
}
.nav li ul {
  background: #fff;
}
.nav li ul li {
  width: 200px;
}
.nav li ul a {
  border: none;
}
.nav li ul a:hover {
  background-color:#ddd;
}
/* Slide Down
============================== */
.nav3 ul > li:hover ul li {
  height: 36px;
}
.nav3 li ul {
  position: absolute;
  left: 0;
  top: 36px;
  z-index: 1;
}
.nav3 li ul li {
  overflow: hidden;
  height: 0;
  -webkit-transition: height 200ms ease-in;
  -moz-transition: height 200ms ease-in;
  -o-transition: height 200ms ease-in;
  transition: height 200ms ease-in;
}