body{
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: 100% 100%;
    background-size: 100% 100%;
    background: #fafafa;
    font-family: "PingFang SC", "Helvetica Neue", "Hiragino Sans GB", "Segoe UI", "Microsoft YaHei", 微软雅黑, sans-serif;
    color: #;
    color: #2e3e4e;
    font-size: 14px;
}