img{
    display: block;
}

.product-box{
    width: 1200px;
    margin: 0 auto;
    display: flex;
}

.product-left{
    flex-grow: 0;
}

.produc-left-title{
    background-color: #2e3193;
    box-sizing: border-box;
    min-width: 200px;
    padding: 20px;
    color: #FFF;
    font-size: 18px;
    text-align: center;
    margin-bottom: 10px;
}

li.parent-li{
    background-color: #E5E5E5;
    box-sizing: border-box;
    min-width: 200px;
    padding: 10px;
    /* color: #FFF; */
    font-size: 16px;
    text-align: center;
    margin-bottom: 2px;
    position: relative;
}

li.parent-li::before{
    content: '';
    width: 20px;
    height: 10px;
    position: absolute;
    top: 0;
    left: 0;
    border-top: 2px solid #999;
    border-left: 2px solid #999;
}

li.parent-li::after{
    content: '';
    width: 20px;
    height: 10px;
    position: absolute;
    bottom: 0;
    right: 0;
    border-bottom: 2px solid #999;
    border-right: 2px solid #999;
}

li.child-li{
    background-color: #EAEAEA;
    box-sizing: border-box;
    min-width: 160px;
    padding: 5px;
    /* color: #FFF; */
    font-size: 16px;
    text-align: center;
    margin: 2px 5px;
    position: relative;
}

li.chil-li::before{
    content: '';
    width: 20px;
    height: 10px;
    position: absolute;
    top: 0;
    right: 0;
    border-top: 2px solid #999;
    border-right: 2px solid #999;
}

li.chil-li::after{
    content: '';
    width: 20px;
    height: 10px;
    position: absolute;
    bottom: 0;
    left: 0;
    border-bottom: 2px solid #999;
    border-left: 2px solid #999;
}

.product-left li a{
    /* color: #FFF; */
    font-size: 14px;
    text-align: center;
}

.product-right{
    margin-left: 20px;
}

.product-right-title{
    width: 100%;
    border-bottom: 2px solid #C5C5C5;
    margin-left: 10px;
}

.product-right-title-content{
    
    box-sizing: border-box;
    max-width: 200px;
    padding: 10px 20px;
    color: #000;
    font-size: 18px;
    text-align: center;
}

.product-right-list{
    display: flex;
    flex-wrap: wrap;
}

.product-right-list-item{
    width: calc(33.33% - 20px);
    box-sizing: border-box;
    margin: 10px;
    padding: 20px;
    border: 2px solid #999;
    background: #FFF;
}

.product-right-list-item:hover{
    border: 2px solid blue;
}

.product-right-list-item img{
    width: 100%;
    display: block;
}

.product-right-list-item-title{
    text-align: center;
    margin-top: 10px;
}

.production-ability{
    /* display: flex;
    flex-direction: column; */
    background-color: #666;
    padding: 50px 20px;
}

.production-ability-title{
    font-size: 36px;
    line-height: 36px;
    color: #FFF;
    position: relative;
    text-align: center;
}

.production-ability-title::before{
    content: '';
    width: 400px;
    height: 1px;
    background-color: #FFF;
    position: absolute;
    top: 50%;
    left: 20%;
}

.production-ability-title::after{
    content: '';
    width: 400px;
    height: 1px;
    background-color: #FFF;
    position: absolute;
    top: 50%;
    right: 20%;
}

.production-ability-word{
    font-size: 36px;
    line-height: 36px;
    color: #FFF;
    text-align: center;
}

.production-ability img {
    width: 100%;
}

.news{
    padding: 60px 20px;
}

.news-title{
    font-size: 36px;
    line-height: 42px;
    position: relative;
    text-align: center;
    width: 100px;
    margin: 20px auto;
    border-left: 2px solid #666;
    border-right: 2px solid #666;
    padding: 20px;
}

.news-title::before{
    content: '';
    width: 40px;
    height: 40px;
    border-top: 2px solid #666;
    position: absolute;
    top: 0;
    left: 0;
}

.news-title::after{
    content: '';
    width: 40px;
    height: 40px;
    border-bottom: 2px solid #666;
    position: absolute;
    bottom: 0;
    right: 0;
}

.news-content{
    display: flex;
    justify-content: space-between;
    width: 1200px;
    margin: 80px auto 20px auto ;
}

.news-content-left{
    flex-shrink: 0;
    width: 60%;
}

.news-content-left-item{
    padding: 20px;
    background-color: #FFF;
    border-bottom: #000;
    margin-bottom: 10px;
    position: relative;
    display: flex;
    justify-content: space-between;
    border-radius: 0 5px 5px 5px;
}

.news-content-left-item:nth-of-type(5n+1){
	display: none;
}

.news-content-left-item::before{
    content: '';
    position: absolute;
    width: 40px;
    height: 20px;
    border-top: 2px solid #000 ;
    border-left: 2px solid #000;
    top: 0;
    left: 0;
}

.news-content-left-item a{
    font-size: 20px;
    color: #333;
}

.news-content-left-item-time{
    color: #999;
}

.news-content-right{
    flex-shrink: 0;
    width: 30%;
}

.news-content-right img{
    width: 100%;
}

.about-img img{
    width: 300px;
}

.flex-left{
    width: 20%;
    flex-shrink: 0;
    margin-right: 10px;
}

.flex-right{
    flex-grow: 1;
}

.index-adver{
    width: 100%;
}

.index-adver img{
    width: 100%;
}

.bottom-nav{
    display: flex;
    width: 1350px;
    margin: 0 auto;
    background-color: #000;
}

.bottom-nav-item{
    width: 150px;
    display: block;
    line-height: 55px;
    text-align: center;
    font-weight: normal;
    font-size: 16px;
    transition: all 0.3s;
}

.bottom-nav-item a{
    color: #FFF;
    font-size: 16px;
}

.bottom-second{
    display: flex;
    width: 1350px;
    margin: 0 auto;
    background-color: #000;
}

.bottom-second>div{
    width: 150px;
    min-height: 1px;
}

.bottom-nav-item-second{
    width: 150px;
    line-height: 36px;
    text-align: center;
    font-weight: normal;
    color: #FFF;
    font-size: 14px;
}

.bottom-nav-item-second a{
    color: #FFF;
    font-size: 14px;
}

.bottom-back{
    background-color: #000;
}

#second-banner img{
	width: 300px;
	height: 300px;
}