*{
    margin:0px;
    padding:0px;
}
ul,li{
    list-style:none;
}
a{
    text-decoration:none;
}
img{
    border:0px;
}
.daohang{
    width: 100%;
    height: 173px;
    background: #000000;

}
.a1_logo{
    /*width: 111px;*/
    width: 6%;
    height: 142px;
    /*margin-left: 71px;*/
    margin-left: 4%;
    /*margin-right: 44px;*/
    margin-right:2%;
    float: left;
    margin-top: 31px;
}
.a1_daohang{
    /*width: 1635px;*/
    width: 85%;
    height: 173px;
    float: left;

}
.a1_daohang li{
    /*width: 160px;*/
    width: 10%;
    height: 173px;
    float: left;
    /*margin-right: 20px;*/
    margin-right: 1%;
    font-family: Arial;
    /*font-size: 20px;*/
    line-height: 173px;
    text-align: center;
    color: #ffffff;
}
.a1_daohang li a{
    color: #ffffff;

}
.a1_daohang li a:hover{
    display:block;
    /*width: 160px;*/
    width: 100%;
    height: 173px;
    background: #444446;
    line-height: 173px;
    /*font-size: 20px;*/
}
.banner{
    width: 100%;
    /*height: 745px;*/
}
.aktv{
    /*width: 160px;*/
    width: 100%;
    height: 173px;
    background: #444446;
    line-height: 173px;
    text-align: center;
    /*font-size: 20px;*/
    float: left;

}

.z{
    /*width: 1505px;*/
    width: 78%;
    min-height: 3200px;
    /*margin-left: 212px;*/
    margin-left:11%;
}
.z_1{
    /*width: 1505px;*/
    width: 100%;
    height: 162px;
    border-bottom: 1px solid black;
    line-height:162px ;
    /*font-size: 35px;*/
    font-size: 2.25rem;
    font-family: Arial;
    font-weight: bold;
    text-align: center;
}
.z_2{
    font-family: Arial;
    /*font-size: 28px;*/
    font-size: 1.5rem;
    /*width: 1505px;*/
    width: 100%;
    min-height: 347px;
    line-height: 38px;
}
.z_3{
    /*width: 1505px;*/
    width: 100%;
    min-height: 558px;
    border-bottom: 1px solid black;
    margin-bottom: 43px;
}

.z_4{
    /*width: 1505px;*/
    width: 100%;
    min-height: 1500px;


}
.z_4_1{
    /*width: 1459px;*/
    width: 97%;
    height: 307px;
    /*margin-left: 46px;*/
    margin-left: 3%;
    margin-bottom: 31px;
}
.z_4_1_a{
    /*width: 455px;*/
    width: 31%;
    height: 307px;
    /*margin-right: 48px;*/
    margin-right: 3%;
    float: left;
}
.z_4_1_b{
    /*width: 956px;*/
    width: 65%;
    height: 307px;
    float: left;
}
.z_4_1_b_1{
    /*font-size: 35px;*/
    font-size: 2.25rem;
    font-weight: bold;
    font-family: Arial;
    /*width: 956px;*/
    width: 100%;
    height: 120px;
    line-height: 120px;
}
.z_4_1_b_2{

    /*font-size: 30px;*/
    font-family: Arial;
    font-size: 1.575rem;
    /*width: 956px;*/
    width: 100%;
    height: 187px;
}