#header {
	text-align: center;
	background: black;
	color: white;
	position: fixed;
	top: 0px;
	left: 0px;
	width: 100%;
	z-index: 999;
	height: 50px;
	line-height: 50px;
}

#footer {
	text-align: center;
	background: black;
	color: white;
	padding: 10px 0px;
	margin-top: 30px;
}

#mycontainer {
	padding-top: 60px;
}

#mycontainer2 {
	padding-top: 120px;
}

#back {
	background: gray;
	text-align: center;
	position: fixed;
	top: 50px;
	left: 0px;
	width: 100%;
	z-index: 999;
	height: 50px;
	line-height: 50px;
	color: white;
	display: black;
}

#back:hover {
	background: #777;
}

h1 {
	margin: 0px;
	padding: 0px;
	padding-bottom: 15px;
	color: #0000FF;
	font-weight: bold;
}

#art {
	list-style-type:none;
	margin-top:10px;
	color:#0000FF;
	margin: 0px;
	padding: 0px;
}

#art li {
	background:url(../images/dagou.gif) no-repeat left;
	padding: 5px 0px;
	padding-left:30px;
	font-size:25px;
}

.tip {
	display: none;
}