.about_1{
    height: 873px;
    background: #f7f8fc;
}
.about_1_inner{
    padding-top: 23px;
}
.about_1_inner img{
    display: block;
    margin: 56px auto;
}
.inner_title{
    text-align: center;
    font-size: 30px;
    margin-bottom: 23px;
}
.about_1_inner :nth-child(2),.about_1_inner :nth-child(3),.about_1_inner :nth-child(4),.about_1_inner :nth-child(5){
    font-size: 16px;
    color: #494949;
    margin-bottom: 15px;
}

.about_2{
    height: 592px;
    background: url(../image/about/bulid.png) no-repeat;
    background-position: bottom;
    background-color: #fff;
    padding-top: 65px;
}
.about_2_inner ul {
    padding-top: 86px;
}
.about_2_inner li {
    margin-right: 155px;
}
.about_2_inner_1{
    width: 295px;
    height: 330px;
    text-align: center;
    background: url(../image/about/out_1.png) no-repeat center;
    background-position: top;
    padding-top: 165px;
}
.about_2_inner_2{
    width: 295px;
    height: 330px;
    text-align: center;
    background: url(../image/about/out_2.png) no-repeat center;
    background-position: top;
    padding-top: 165px;
}
.about_2_inner_3{
    width: 295px;
    height: 330px;
    text-align: center;
    background: url(../image/about/out_3.png) no-repeat center;
    background-position: top;
    padding-top: 165px;
}
.about_2_inner_1 img{
    margin-bottom: 26px;
}
.inner_title_01{
    font-size: 26px;
    color: #565656;
    margin-bottom: 28px;
}
.inner_text{
    font-size: 16px;
    color: #494949;
}

.about_3{
    background-color: #fff;
    padding-top: 52px;
}
.about_3 p{
    margin-bottom: 0;
}
.about_3_inner {
    height: 385px;
    background: url(../image/about/map.png) no-repeat;
    padding-top: 125px;
    background-position-x: center;
}
.about_black{
    width: 688px;
    height: 342px;
    background: #2d353d;
    padding: 55px;
    box-sizing: border-box;
    color: #fff;
    font-size: 16px;
    text-align: center;
    border: 1px dashed #fff;
}
.about_black_top{
    display: table;
    margin: auto;
}
.about_black_top :nth-child(1){
    width: 478px;
    font-size: 26px;
    border-bottom: 1px solid #4d565e;
    padding-bottom: 12px;
    margin-bottom: 13px;
}
.about_black_bottom{
    margin-top: 52px;
    text-align: left;
}
.about_black_bottom p{
    min-width: 50%;
    margin-bottom: 20px;
}

.over_1{
    background: url(../image/about/over_1.png) no-repeat center;
    background-position: top;
}
.over_2{
    background: url(../image/about/over_2.png) no-repeat center;
    background-position: top;
}
.over_3{
    background: url(../image/about/over_3.png) no-repeat center;
    background-position: top;
}