body{background:#fff;color:#6a6a6a;font:12px/1.5 hiragino sans gb,microsoft yahei,simsun}
body,ul,li,p,h2,h3{margin:0;padding:0}
h2,h3,input{font-size:12px;font-weight:400}
li{list-style:none}
img{border:0;vertical-align:top}
em{font-style:normal}
a{outline:0}
.cfix:after,.cf:after{content:".";display:block;visibility:hidden;height:0;clear:both}
.cfix,.cf{zoom:1}
.l{float:left}
.r{float:right}
.rel{position:relative}
.abs{position:absolute}
.area{width:980px;margin:0 auto}
.hide{display:none}
a{text-decoration:none;color:#000}
a:hover{color:#16b6dc}
.fs14{font-size:14px}
.copyright{padding-bottom:10px; font-size: 13px;}
.footprint{padding-top:10px;font-size:13px;}
#lesson-box .footprint{padding-bottom: 10px;}