/*公共样式*/
a{text-decoration: none;color:#000;}
*{margin:0;padding:0;box-sizing:border-box;}
ul li,ol li{list-style: none}
b{font-weight: normal;}
em,i{font-style: normal;}
html,body{height:100%;background-color:#fff;}
input,button,select{outline: none;background:none;border:none;}
button{cursor:pointer;}
img{border:none;}
.lf{float:left;}
.rf{float:right;}
.whole{width:1200px;margin:0 auto;position:relative;}