html,body,dd,dl,fieldset,iframe,form,h1,h2,h3,h4,h5,h6,input,legend,ol,p,select,td,textarea,th,ul { margin:0; padding:0;  }
body { font-size: 16px;  font-family:"微软雅黑","Microsoft Yahei","Arial";  color: #222;}
ol,ul,li,dt,dd,dl{list-style:none;}
address,cite,dfn,em,var, i {font-style:normal;}
h1, h2, h3, h4, h5, h6, th { font-size: 100%; font-weight: normal; list-style:none}
fieldset,img{border:0;}
button,input,select,textarea{font-size:100%;}
a{color:#191919;}a,a:hover{text-decoration:none}
.clear,.clearfix:after{content:".";   display:block;height:0;   clear:both;   visibility:hidden;}
.clearfix:after{visibility:hidden;content:"."}
.clearfix{*zoom:1}

*{
    margin: 0;
    padding: 0;
     box-sizing: border-box;
}




/* 公共样式 */
h1{font-size:24px;}
h2{font-size:18px;}
h3{font-size:16px;}
h4{font-size:14px;}
.fl{float:left}
.fr{float:right}
.fn12{font-size:12px}
.mt5{margin-top:5px;}
.mt10{margin-top:10px;}
.mt15{margin-top:15px;}
.mt20{margin-top:20px;}
.mt30{margin-top:30px;}
.mt50{margin-top:50px;}