.bh_top_book{
    position:relative;
    float:left;
    width:100%;
    border-bottom:1px solid lightgray;
    background-color:white;
}
.bh_top_book_img,.bh_top_book_ml{position:relative;float:left;padding:4px;}
.bh_top_book_img{width:180px;height:120px;}
.bh_top_book_img img{max-width:170px;height:110px;padding:5px;}
.bh_top_book_ml font{font-size:18px;font-weight:bold;}
.bh_body_data_holder,.bh_body_data_ml{
    position:relative;
    float:left;
}
.bh_body_data_holder{
    width:100%;
    background-color:white;
}
.bh_body_data_info{position:relative;float:left;max-width:600px;}
.bh_body_data_ml{
    width:320px;
    padding:1px;
}
.bh_body_data_ml ul{list-style-type:none;-webkit-padding-start:10px;}
.bh_body_data_ml li{line-height:24px;border-bottom:1px solid lightyellow;}
.bh_ml_list_title{text-align:center;border-bottom:1px solid lightblue;}
.bh_ml_list_title font{font-size:18px;font-weight:bold;line-height:30px;}
.bh_body_data_ml{}
.baihoc_holder{
    position:relative;
    float:left;
    min-width:500px;
    height:400px;
    border:1px solid lightgray;
}
.baihoc_headerholder{position:relative;float:left;border-bottom:1px solid lightgray;background-color:lightgray;width:100%;}
.baihoc_bodyholder{ position:relative;float:left;font-size:16px;font-weight:bold;height:350px;width:100%;}
.bh_bt_m_holder{position:absolute;top:0px;width:100%;height:100%;}
.bh_bgr_cover{position:absolute;top:0px;width:450px;height:376px;}
.bh_bt_holder{position:relative;margin:220px auto;width:160px;}
.bh_bt_holder button{position:relative;float:left;width:160px;text-align:center;height:45px;font-size:18px;margin:5px 0px;}
.baihoc_home_bgr{padding:10px;text-align:center;width:90%;}
.baihoc_home_bgr font{font-size:18px;font-weight:bold;}
.bh_info_q,.bh_info_a{position:relative;width:320px;}
div.bh_info_q{font-size:20px;margin:160px auto;text-align:center;}
.bh_info_a{font-size:16px;margin:80px auto;}
.bh_nav_holder{
    position:absolute;
    width:100%;
    height:50px;
    top: 45%;
    z-index:1;
}
.bh_nav_left{
    position:relative;
    height:50px;
    float:left;
    cursor:pointer;
}
.bh_nav_right{
    position:relative;
    height:50px;
    float:right;
    cursor:pointer;
}
.bh_nav_footer{position:absolute;
    height:25px;
    width:100%;
    text-align:center;
    bottom:2px;
}
.bodytest_holder{
    position:relative;
    width:100%;
    height:350px;
}
.bodytest_item_q,.bodytest_item_a{position:relative; float:left;width:100%;padding:10px;}
.t_bt_it{position:relative;float:left;width:120px;background-color:lightgray;border-radius:15px;text-align:center;height:25px;margin:2px;}
.t_bt_it_sl{position:relative;float:right;right:10px;}
.t_footer_holder{position:absolute;bottom:1px;text-align:center;width:100%;}
.testresultitem{position:relative;float:left;width:100%;height:300px;overflow-y:scroll;}
.t_rs_it_q,.t_rs_it_a{position:relative;float:left;width:100%;}
.t_rs_it_q{background-color:#efefef;}
.t_rs_it_a{height:40px;}
.t_rs_it_aleft,.t_rs_it_aright{position:relative;float:left;}
.t_rs_it_aleft{width:80%;}
.t_rs_it_aright{width:20%;}