/*内外边距重置*/
*{
	margin: 0;
	padding: 0;
	font-size: 12px;
}

a{
	text-decoration: none;
}
li{
	list-style: none;
}
/*清除浮动*/
.clear:after{
	content: "";
	width: 0;
	height: 0;
	display: block;
	clear: both;
}