.bg{
    background-color: #f8f8f8;
}

.banner-news{
    width: 100%;
}
.banner-news img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.content1{
    display: flex;
    /*实现垂直居中*/
    align-items: center;
    /*实现水平居中*/
    justify-content: center;
    text-align: center;
    margin:0 auto;
    background-color: #fff;
    position: relative;
    top:-50px;
    left: 0;
    padding-top: 60px;
    padding-bottom: 60px;
}
.serve{
    padding-top: 50px;
}
.serve h4{
    font-size: 24px;
    font-weight: normal;
    text-align: center;
    line-height: 50px;
}
.serve h4  span{
    font-weight: 700;
}
.serve>span {
    display: block;
    width: 50px;
    border-bottom: 3px solid #2d2d2d;
    margin: 20px auto;
}
.serve>p{
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;    
}
.serve .serve-items {
    display: flex;
    flex-wrap: wrap;
}
.serve .serve-items .item{
    width: 24%;
    display: flex;
    margin-left: 10px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-bottom: 30px;
}
.serve .serve-items .item img{
    max-width: 100%;
}
.serve .serve-items .item h6{
    margin: 10px;
    padding-top: 20px;
    font-size: 14px;
    font-weight: normal;
}
.door .img  {
    width: 100%;
    position: absolute;
    z-index: -1;    

}
.door .img img{
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.door .inner{
    margin-top: 100px;
    position: relative;
}
.door .inner h4{
    font-size: 24px;
    font-weight: normal;
    text-align: center;
    line-height: 50px;
    color: #fff;
    padding-top: 100px;
}
.door .innerh4  span{
    font-weight: 700;
}
.door .inner>span {
    display: block;
    width: 50px;
    border-bottom: 3px solid #fff;
    margin: 20px auto;
}
.door .inner>h5{
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;
    color: #fff;
}
.door .inner>p{
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;
    color: #fff;
    padding-bottom: 300px;
}
.ddp{
   padding-top: 100px;
    background-color: #fff;
    margin-bottom: 200px;
}

.ddp .inner h4{
    font-size: 24px;
    font-weight: normal;
    text-align: center;
    line-height: 50px;
}
.ddp .inner h4  span{
    font-weight: 700;
}
.ddp .inner>span {
    display: block;
    width: 50px;
    border-bottom: 3px solid #2d2d2d;
    margin: 20px auto;
}
.ddp .inner>p{
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;
}
.ddp .inner .ddp-items {
    width: 100%;
    display: flex;
    overflow: hidden;
    flex-wrap: wrap;
}
.ddp .inner .ddp-items .item{
    width: 16%;
    height: 350px;
    display: flex;
    flex-direction: column;
    border: 1px solid #dededf;
    padding-top: 50px;
    position: relative;
    overflow: hidden;
}
.ddp .inner .ddp-items .item:hover {
    box-shadow: 0 0 10px -5px;
    padding-top: 20px;
    border-bottom: none;
}
.ddp .inner .ddp-items .item h6{
    text-align: center;
    font-size: 18px;
    line-height: 28px;
}
.ddp .inner .ddp-items .item span{
display: block;
width: 50px;
border-bottom: 3px solid #2d2d2d;
margin: 20px auto;
}
.ddp .inner .ddp-items .item p{
    text-align: center;
    font-size: 14px;
    line-height: 20px;
    padding-top: 10px;
}
.ddp .inner .ddp-items .item p:last-child{
    text-align: center;
    font-size: 14px;
    padding-bottom: 160px;
}
.ddp .inner .ddp-items .item .num{
    position: absolute;
    font-family: Impact;
    font-size: 180px;
    color: rgba(0,0,0,.1);
    bottom: -81px;
    left: 31px;
    overflow: hidden;
}
.num1{
    display: none;
    position: absolute;
    font-family: Impact;
    font-size: 180px;
    color: rgba(0,0,0,.1);
    bottom: -81px;
    left: 31px;
}
footer{
    background-color: #c5c5c5;
}
footer p{
    text-align: center;
    line-height: 45px;
    color: #454545;
}
@media screen and (min-width: 1920px){
/*    .inner{
        width: 1440px;
    }*/
}
@media screen and (max-width: 1440px){
    .serve .serve-items .item{
        width: 24%;
    }
    .door .inner>p{
        padding-bottom: 100px;
    }
}
@media screen and (max-width: 1280px){
    .serve .serve-items .item{
        width: 23%;
    }
    .ddp .inner .ddp-items .item{
        width: 33%;
    }
}
@media screen and (max-width: 980px){
    .inner{
        width: 95%;
    }
    .serve .serve-items .item{
        width: 30%;
    }
    .content1{
        top: -30px;
    }
    .door .inner{
        margin-top: 30px;
    }
    .door .inner h4{
        padding-top: 50px;
    }
    .door .inner>p{
        padding-bottom: 50px;
    }
    .ddp .inner .ddp-items .item{
        width: 30%;
    }
}
@media screen and (max-width: 750px){
    .content1{
        top: -20px;
    }
    .serve .serve-items .item{
        width: 95%;
    }
    .door .inner{
        margin-top: 10px;
    }
    .door .inner h4{
        padding-top: 10px;
    }
    .door .inner>p{
        padding-bottom: 0px;
    }
    .door .inner h5 ,.door .inner p{
        color: #2d2d2d;
        
    }
    .door .inner span{
        border-bottom: 3px solid #2d2d2d;
    }
    .num1{
        display: block;
        left: 9px;
    }
    .num{
        display: none;
    }
}