.banner{
    width: 100%;
}
.banner img{
    width: 100%;
    height: auto;
    display : block ;
}
.need{
    width: 100%;
    height: 5.72rem;
    background: url("../yidong_files/header.png") no-repeat;
    background-position: center;
    background-size: cover;
    text-align: center;
    overflow: hidden;
}
.need span{
    color:#e72d44 ;
}
.need h3{
    font-size: 0.3rem;
    margin-top: 2.2rem;
    margin-bottom: 0.54rem;
}
.need p{
    font-size: 0.26rem;
    line-height: 0.5rem;
}
.need h2{
    font-size: 0.32rem;
    color:#e72d44 ;
    margin-top: 0.54rem;
}
.jiantou{
    width: 100%;
    background: #f5f5f5;
    text-align: center;
    padding: 0.1rem 0 0.2rem 0;
}
.jiantou img{
    width:0.3rem ;
    height: 0.37rem;
}
.needrou{
    padding: 0 0.2rem;
}
.needrou ul li{
    width: 100%;
    height: 2.1rem;
    background: #ffffff;
    margin-bottom: 0.2rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0 0.26rem;
}
.needrou ul li img{
    width: 1.5rem;
    height: 1.5rem;
    margin-right: 0.26rem;
}
.needrou-txt{
    flex: 1;
}
.needrou-txt h3{
    font-size: 0.28rem;
    color: #e72d44;
    margin-bottom: 0.06rem;
}
.needrou-txt p{
    font-size: 0.24rem;
    line-height: 0.36rem;
    color: #666666;
}
.pro{
    width: 100%;
    padding: 0 0.1rem;
    margin-bottom: 0.24rem;
}
.pro h2,.youshi h2,.liu h2{
    font-size: 0.36rem;
    text-align: center;
    position: relative;
    background-image: url("../yidong_files/toua.png");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 5.19rem 0.17rem;
    padding: 0.36rem 0;
}
.pro ul{
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    justify-content: space-between;
}
.pro ul li{
    margin-bottom: 0.06rem;
}
.pro ul li img{
    width: 2.36rem;
    height: 2.52rem;
}
.youshi{
    width: 100%;
    height: 8.25rem;
    background: url("../yidong_files/youshiback.png") no-repeat;
    background-position: center;
    background-size: cover;
    position: relative;
}
.youshi h2{
    background-image: url("../yidong_files/toub.png");
    background-size: 4.49rem 0.17rem;
    color: #ffffff;
}
.youshi a{
    position: absolute;
    display: block;
    margin: 0 auto;
    padding: 0.2rem;
    background: #e72d44;
    border-bottom: 0.04rem solid #c1041b;
    border-radius: 0.06rem;
    font-size: 0.24rem;
    color: #ffffff;
    bottom: 0.44rem;
    width: 4.5rem;
    left: 50%;
    transform: translateX(-50%);
}
.liu h2{
    background-image: url("../yidong_files/touc.png");
    background-size: 4.18rem 0.17rem;
}
.back{
    width: 100%;
    height: 4.94rem;
    background-image: url("../yidong_files/liucheng.png");
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}