body {
    height: 100%;
    overflow: hidden;

    font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;
    color: #666;
    background-color: #fff;
    
    /* 文字不可选中 */
    -webkit-user-select:none;
    -moz-user-select:none;
    -ms-user-select:none;
    user-select:none;

}