* {box-sizing: border-box;}
body{background-color:#fff;padding:0px;margin:0px;overflow-x:hidden;}

.f-l{float:left}
.f-r{float:right}
.c-fix{clear:both}

.cp{cursor:pointer;}
.underline{text-decoration:underline;}
.fw{font-weight:bold}

.f-arial{font-family:Arial}
.f-yahei{font-family:微软雅黑}
.s-exsml{font-size:0.1rem}
.s-sml{font-size:0.18rem}
.s-mid{font-size:0.2rem}
.s-big{font-size:0.48rem}
.s-extra{font-size:0.56rem}

.center{text-align:center}