*{
	margin: 0;
	padding: 0;
	list-style: none;
	box-sizing:border-box;
	outline:none;
	border: none;
	font-family: "微软雅黑";
	text-decoration: none;
	color: inherit;
	line-height: inherit;
	vertical-align: middle;
	
}
ul{
	padding: 0;
	margin: 0;
}
*:hover{
	color: inherit;
}
.left{
	float: left;
}
.right{
	float: right;
}
.pr{
	position: relative;
}
.pa{
	position: absolute;
}
.clear{
	overflow: hidden;
}