#name_list ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: greenyellow;
  width:90%;
  -moz-box-shadow: 10px 10px 5px #888888; /* 老的 Firefox */
  box-shadow: 10px 10px 5px #888888;
  border-radius:18px;
  margin-right: auto;
  margin-left: auto;
}

li {
  float: left;
}

#Nav div {
	width: 150px;
	border-radius: 18px 18px 0px 0px/18px 18px 18px 18px;
	text-align: center;
	float: left;
}

li a {
  display: block;
  color: olivedrab;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover:not(.active) {
  background-color: #EEEE00;
  color: black;
}

.active {
  background-color: #4CAF50;
}

#Header {
	background-image: url(../img/banner.png);
	height:50px;
	background-repeat: repeat-x;
    background-position: center;
	text-align:center;
	line-height:50px;
	text-shadow: 0.1em 0.1em 0.2em black;
	color: #FFFFFF;
	font-size:xx-large;
}