#app{font-family:Microsoft YaHei,微软雅黑,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-align:center;color:#2c3e50}.gray{-moz-filter:grayscale(100%);-ms-filter:grayscale(100%);-o-filter:grayscale(100%);filter:grayscale(100%);filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);filter:gray}body{margin:0;font-size:1vw}@media (max-width:991px){body{padding-bottom:65px}}