html,body,div,span,object,iframe,p,h1,h2,h3,h4,h5,h6,blockquote,pre,abbr,address,cite,code,del,dfn,em,img,ins,kbd,q,samp,small,strong,sub,sup,var,b,i,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,figcaption,figure,footer,header,hgroup,menu,nav,section,summary,time,mark,audio,video{
	margin: 0;
	padding: 0;
	border: 0;
	outline: 0;
	font-family:"微软雅黑";
}
body {
	line-height : 1;
	color: #555555;
	font-size: 12px;
}
h1{
	font-size:28px;
}
h2{
	font-size:24px;
}
h3{
	font-size:20px;
}
h4{
	font-size:18px;
}
h5{
	font-size:16px;
}
h6{
	font-size:12px;
}
input {
	font-family: "微软雅黑"
}
nav ul {
	list-style: none;
	padding: 0px;
	margin: 0px;
}
.clear{
	clear:both; 
}