/*定位居中*/
.middle {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}

 
 
/*清除浮动*/
.clearfix:before,
.clearfix:after {
    content: "";
    display: table;
}

.clearfix:after {
    clear: both;
}

.clearfix {
    *zoom: 1;
    /*IE/7/6*/
}
body,ol,ul,li,h1,h2,h3,h4,h5,h6,p,th,td,dl,dd,form,fieldset,legend,input,textarea,select{
    font-family:"PingFang SC", "Calibri", "opensans", "GothicArial", "Arial",  "Microsoft YaHei", "San Francisco", 'Hiragino Sans GB', "Helvetica Neue", Helvetica, sans-serif !important;;
}