.banner{
    background: url(../images/banner.png) no-repeat top center;
    width: 100%;
    height: 985px;
    margin: 0 auto;
    padding: 0;
}
.w1000{
    width: 1000px;
    margin: 0 auto;
}
.first{
    background: url(../images/first_bg.png) no-repeat top center;
    width: 100%;
    height: 397px;
    margin-top: -196px;
}
.first ul{
    width: 953px;
    margin: 0 auto;
    padding-top: 30px;
}
.first ul li{
    font-size: 22px;
    line-height: 44px;
    color: #006378;
    text-indent: 3rem;
    letter-spacing: 1px;
}
.third{
    background: url(../images/third_bg.png) no-repeat top center;
    width: 100%;
    height: 1338px;
    margin: 0 auto;
}
.third .title{
    width: 226px;
    height: 32px;
    margin: 0 auto;
    display: block;
    padding-top: 17px;
}
.line_g{
    width: 962px;
    border: 2px solid #f1f1f1;
    margin: 15px auto;
}
.third .content{
    width: 924px;
    margin: 0 auto;
    color: #006378;
    font-size: 22px;
    line-height: 47px;
}
.four{
    background: url(../images/four_bg.png) no-repeat top center;
    width: 100%;
    height: 277px;
    margin: 0 auto;
}
.four .title{
    width: 179px;
    height: 30px;
    display: block;
    padding-top: 18px;
    padding-left: 29px;
    padding-bottom: 10px;
}
.four .detail{
    font-size: 22px;
    color: #006378;
    padding-left: 29px;
    line-height: 36px;
}