.aboutus_menu_wrap{
    overflow: hidden;
    width: 100%;
    background: rgba(255,255,255,0.05);
    position: absolute;
    bottom: 2px;
    left: 0;

    /*filter:Alpha(opacity=50);
    position:static;
    *zoom:1; */
}
.aboutus_menu{
    overflow: hidden;
    width: 300px;
    margin:0 auto;
    position: relative;
}
.aboutus_menu a {
    position: relative;
    float: left;
    display: block;
    width: 112px;
}
.aboutus_menu li {
    position: relative;
    float: left;
    cursor: pointer;
    width: 112px;
}
.aboutus_middle{
    margin-left: 64px;
}
.aboutus_menu_font{
    width: 100%;
    height: 50px;
    line-height: 50px;
    cursor: pointer;
    font-size: 16px;
    color: #fff;
    overflow: hidden;
    text-align: center;
    margin:0 auto;
    position: relative;/* 璁剧疆瀛愬厓绱犱负鐩稿瀹氫綅锛屽彲璁╁瓙鍏冪礌涓嶇户鎵緼lpha鍊� */
}
.aboutus_line{
    width: 80px;
    height: 2px;
    position: absolute;
    bottom: 1px;
    left: 16px;
    display: none;
}
.aboutus_line_fir{
    display: block;
}
.aboutus_tab{
    width: 1200px;
    margin:0 auto;
    overflow: hidden;
    display: none;
}
.aboutus_tab_fir{
    display: block;
}