* {
    margin: 0;
    padding: 0;
    list-style: none;
}

body {
    font-family: 'PingFang SC',Helvetica,'Microsoft YaHei',Arial;
}

/* 置灰 */
/*html {*/
/*    filter: grayscale(100%);*/
/*  -webkit-filter: grayscale(100%);*/
/*  -moz-filter: grayscale(100%);*/
/*  -ms-filter: grayscale(100%); */
/*  -o-filter: grayscale(100%);*/
/*  filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);*/
/*  -webkit-filter: grayscale(1);filter: gray;*/
/*}*/