body{
    /*background-color: #000000;*/
    font-size: 16px;
    min-width: 1200px;
}
a{
    color: #000000;
}
.logo{
    margin-top: 60px;
    text-align: center;
}
.logo img{
    width: 160px;
    height: 120px;
}
.b1{
    margin-top: 40px;
    text-align: center;
    font-size: 30px;
}
.b2{
    margin-top: 10px;
    text-align: center;
    font-size: 25px;
    color: #555555;
}
.nav{
    margin-top: 30px;
    text-align: center;
}
.nav ul{
    list-style-type: none;
}
.nav ul li{
    display: inline-block;
    margin-right: 25px;
}
.pic_1{
    text-align: center;
    background-image: url("../images/p1.png");
    width: 100%;
    height: 909px;
    background-repeat: no-repeat;
    background-position: center;
}
.companyBackground{
    margin-top: 70px;
    text-align: center;
    font-size: 50px;

}
.companyBackground_c{
    margin-top: 40px;
    line-height: 35px;
    text-align:justify;
    text-justify:inter-ideograph;

}
.businessStrategy{
    margin-top: 70px;
    text-align: center;
    font-size: 50px;
}
.businessStrategy_c{
    margin-top: 40px;
    line-height: 35px;
    text-align:justify;
    text-justify:inter-ideograph;
}
.GM{
    margin-top: 70px;
    min-width: 1200px;
}
.GM_pic{
    height: 550px;
    background-image: url("../images/GM.jpg");
    background-repeat: no-repeat;
    background-size: 98% auto;
    background-position: top right;
}
.GM_title{
    font-size: 50px;
}
.GM_name{
    margin-top: 15px;
    margin-bottom: 15px ;
    text-align: center;
    width: 200px;
    font-size: 20px;
    color: #ffffff;
    background-color: #F28A00;
}
.GM_c{
    line-height: 35px;
    text-align:justify;
    text-justify:inter-ideograph;
}
.pic_2{
    margin-top: 50px;
}
.pic_3{
    margin-top: 120px;
    text-align: center;
}
.pic_3 ul{
    list-style-type: none;
}
.pic_3 ul li{
    display: inline-block;
}
.pic_3_left{
    height: 380px;
    color: #ffffff;
    background-color: #7F6B3F;
}
.pic_3_left dl{
    margin-top: 100px;
}
.pic_3_left dl dt{
    font-size: 30px;
    margin-bottom: 10px;
}
.pic_3_left dl dd{
    margin-top: 10px;
}
.pic_4{
    margin-top: 1px;
    text-align: center;
    background-image: url("../images/p2.png");
    background-position: top right;
    background-size: cover;
    height: 540px;
}
.by{
    margin-top: 60px;
    text-align: center;
    margin-bottom: 100px;
}