body {
    background: #f5f5f5;
}

.production {
    padding-top: 7.8rem;
}

.device {
    padding-top: 0.8rem;
    margin-bottom: 0.8rem;
}

.device ul {
    padding-top: 0.7rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    height: 9.88rem;
    align-content: space-between;
    box-sizing: content-box !important;
}

.device ul li {
    width: 3.85rem;
    height: 4.82rem;
    position: relative;
}

.device ul li .production-intro {
    position: absolute;
    width: 100%;
    text-align: center;
    top: 3.75rem;
    z-index: 2;
}

.device ul li .production-intro h5 {
    font-size: 0.25rem;
    line-height:0.25rem;
    margin-bottom: 0.14rem;
}

.device ul li .production-intro p {
    font-size: 0.15rem;
    line-height: 0.15rem;
    color: #808080;
}

.device ul li .pic {
    display: flex;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #fff;
    justify-content: center;
    align-items: center;    
}

.device ul li img {
    transition: .3s;
    position: relative;
    top: -0.5rem;
}

.device ul li:hover img {
    transform: scale(1.05);
}

.device ul li:last-child,.production .device:last-child ul li:nth-last-of-type(3) {
    width: 7.92rem;
}

.production .device:last-child ul {
    height: 19.98rem;
}

@media screen and (max-width: 1200px) {
    .m-container {
        width:100% !important;
        margin: 0 !important;
        padding: 0 30px;
        box-sizing: border-box;
    }

}

.wrap {
    width: 100%;
}

.m-container {
    width:1200px;
    margin: 0 auto;
}


.ad {
    position: absolute;
    padding-top: 0.58rem;
    background-size: 100% 100%;
    color: #fff;
}

.ad header,.part_three header {
    display: flex;
    justify-content: space-between;
}


.ad header {
     display: flex;
     justify-content: space-between;
 }
 
 .ad header .logo {
     width: 2.12rem;
     height: 0.34rem;
     background: url(../img/index/logo.png) no-repeat;
     background-size: contain;
     
 }
 
 /* 导航条 */
 header nav .active {
     height: 0.06rem;
     background: #e6a174;
     opacity: .6;
     position: absolute;
     transition: left .3s;
     border-radius: 15px;
     transform: translateY(-50%);
 }
 
 header nav a {
     line-height: 0.34rem;
     margin-left: 0.4rem;
     letter-spacing: 0.05rem;
     position: relative;
 }
 
 #carouselExampleIndicators {
     position: absolute;
     width: 100%;
     height: 7rem;
     left:0;
     top: 0;
     z-index: -1;
 }
 
 #carouselExampleIndicators img {
     height: 7rem;
 }