@charset 'utf-8';
*{margin: 0; padding: 0; box-sizing: border-box;}
html,body,div,span,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,a,address,em,img,ol,ul,li,fieldset,form,label,legend,table,tbody,tfoot,thead,tr,th,td,i,b,s{font-family:Microsoft YaHei,Helvetica,Arial,sans-serif;font-size:12px;font-weight:inherit;font-style:inherit;margin:0;padding:0;border:0}ul,ol{list-style:none}a img{vertical-align:top;border:none}a{text-decoration:none}button{overflow:visible;margin:0;padding:0;border:0 none;background-color:transparent}button::-moz-focus-inner{padding:0}input[type=password]{-webkit-text-security:disc}textarea:focus,input:focus,button:focus{outline:none}body{word-wrap:break-word}*{-webkit-tap-highlight-color:rgba(0,0,0,0)}.icon{display:inline-block;zoom:1;vertical-align:middle;background-repeat:no-repeat;background-position:left top}.btn{display:inline-block;zoom:1;text-align:center;vertical-align:middle}.none{display:none}
body{line-height:normal; background: #fff;}



.activity-box{
    display: block;
    position: fixed;
    overflow: hidden;
    width: 170px;
    height: 318px;
    background: url(../img/activity_bg.png) no-repeat;
    background-position: 50% 50%;
    left: 20px;
    top: 50%;
    margin-top: -85px;
}