* {
	margin: 0;
	padding: 0;
}
.clearfix::after {
	content: '';
	display: block;
	clear: both;
}
ul {
	list-style-type: none;
}
#wrap {
	width: 850px;
	margin: 0px auto 0;
          margin-left:20px;
}
#head {
	width: 870px;
	height: 44px;
}
#header,#nav {
	float: left;
}
#header {
	width: 290px;
	height: 43px;
	padding-left: 20px;
	line-height: 44px;
	text-align: left;
	font-size: 20px;
	color: #000;
	font-weight: bold;
	border-bottom: 0px solid #000;
}
#nav {
	width: 850px;
	height: 44px;
}
#nav>li {
	float: left;
	box-sizing: border-box;
	width: 170px;
	height: 44px;
	line-height: 44px;
	text-align: center;
	font-size: 18px;
	background-color: rgb(245, 245, 245);
	color: rgb(100, 100, 100);
	border-bottom: 0px solid #000;
	cursor: pointer;
	user-select: none;
}
#nav>li.liShow {
	font-weight: bold;
	color: #fff;
	border: 0px solid #000;
	border-bottom: none;
	background-color: #9f2517;
}
#pic {
	margin-top: 10px;       
}
#pic>div {
	box-sizing: border-box;
	display: none;
	width: 850px;
	min-height: 442px;
	border: 1px solid rgb(223, 223, 223);
}
#pic>div>img {
	width: 850px;
	height: 440px;
}
#pic>div.imgShow {
	display: block;
}