.material-box{
    display: block;
    position: relative;
    width: 100%;
    background-color: #f5f5f5;
    box-sizing: border-box;
    padding: 100px 0;
    min-height: calc(100vh - 80px);
}
.material-all-box{
    width: 1200px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    font-size: 0;
    position: relative;
}
.material-info-box{
    margin-top: 30px;
}
.material-info-l{
    background-color: #fff;
    display: inline-block;
    vertical-align: top;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 50px;
}
.material-info-l .health-page-info-path{
    line-height: 60px;
    color: #555;
}
.material-info-l .health-page-info-path:first-child{
    color: #ff6800;
    margin-left: 0;
}
.material-info-l .health-page-info-path-box div{
    width: initial;
    overflow: initial;
    text-overflow: inherit;
    white-space: initial;
}
.material-info-l .health-page-info-path-box div:last-child{
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.material-line{
    width: 100%;
    height: 1px;
    display: block;
    background-color: #eee;
}
.material-info-edit-box{
    display: block;
    font-size: 16px;
    color: #555;
    letter-spacing: 1px;
    line-height: 2.6;
    box-sizing: border-box;
    padding: 30px 0;
}
.material-info-title-box{
    font-size: 26px;
    display: block;
    font-weight: bold;
    line-height: initial;
}
.material-info-h3{
    font-size: 18px;
    color: #ff6800;
    font-weight: bold;
    display: block;
    margin-top: 15px;
    margin-bottom: 20px;
    line-height: initial;
}
.material-info-btn-box{
    box-sizing: border-box;
    padding: 30px 0;
}
.material-info-btn{
    width: calc(100% - 120px);
    display: inline-block;
    vertical-align: middle;
    text-align: right;
}
.material-info-btn-back-box{
    display: inline-block;
    vertical-align: middle;
}
.material-info-btn-back-box{
    margin: 0 80px;
}
.material-info-btn-back{
    font-size: 14px;
    color: #888;
    letter-spacing: 1px;
    display: inline-block;
    cursor: pointer;
}

.material-info-l .health-page-info-path:first-child:hover{
    color: #000;
}
.material-info-l .oem-online-box{
    margin: 30px 0;
}


.material-info-btn-prev-box,
.material-info-btn-next-box{
    width: 50%;
    display: inline-block;
    vertical-align: middle;
}
.material-info-btn-prev,
.material-info-btn-next{
    width: 100%;
    height: 400px;
    display: block;
    position: relative;
    background-color: #000;
    overflow: hidden;
}
.material-info-btn-bg{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0.8;
}
.material-info-btn-prev-arrow,
.material-info-btn-next-arrow{
    width: 100%;
    height: 100%;
    display:         flex;
    display: -webkit-flex;
    align-items: center;
    -webkit-align-items: center;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction: column;
    position: relative;
    z-index: 1;
}
.material-info-btn-prev-arrow span,
.material-info-btn-next-arrow span{
    width: calc(80% - 120px);
    display: block;
    text-align: center;
    font-size: 18px;
    color: #fff;
    letter-spacing: 1px;
    line-height: 1.2;
}
.material-info-btn-prev-arrow p{
    position: absolute;
    top: calc(50% - 25px);
    left: 40px;
    width: 50px;
    height: 50px;
    border: 3px solid #fff;
    border-radius: 50%;
    display:         flex;
    display: -webkit-flex;
    align-items: center;
    -webkit-align-items: center;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction: column;
    font-size: 26px;
    color: #fff;
    letter-spacing: 1px;
    box-sizing: border-box;
    padding-right: 3px;
}
.material-info-btn-next-arrow p{
    position: absolute;
    top: calc(50% - 25px);
    right: 40px;
    width: 50px;
    height: 50px;
    border: 3px solid #fff;
    border-radius: 50%;
    display:         flex;
    display: -webkit-flex;
    align-items: center;
    -webkit-align-items: center;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction: column;
    font-size: 26px;
    color: #fff;
    letter-spacing: 1px;
    box-sizing: border-box;
    padding-left: 5px;
}

.material-info{
    width: 100%;
    display:         flex;
    display: -webkit-flex;
    flex-direction: row;
}
.material-info:nth-child(even){
    flex-direction: row-reverse;
}
.material-info:nth-child(n + 2){
    margin-top: 60px;
}
.material-info-left{
    width: calc(100% - 600px);
    background-color: #fff;
    box-sizing: border-box;
    padding: 40px 60px;
}
.material-info-text-name{
    font-size: 20px;
    color: #555;
    font-weight: 700;
    letter-spacing: 1px;
}
.material-info-right{
    width: 600px;
    height: 300px;
    overflow: hidden;
}
.material-info-text{
    font-size: 16px;
    color: #888;
    letter-spacing: 1px;
    margin-top: 10px;
}
.material-info-pages-box{
    margin-top: 30px;
}
.material-info-pages{
    display: inline-block;
    border: 1px solid #ff6800;
    border-radius: 25px;
    color: #ff6800;
    width: initial;
    box-sizing: border-box;
    height: 40px;
    font-size: 16px;
    letter-spacing: 1px;
    line-height: 38px;
    padding: 0 15px;
    margin-right: 20px;
    margin-top: 10px;
}

.material-info-tag{
    position: relative;
    top: -100px;
}





@media only screen and (max-width: 1200px){
    .material-all-box{
        width: 1000px;
    }
    /* .material-info-l .health-page-info-path-box div:last-child{
        width: 650px;
    } */
    .material-info-btn-prev, 
    .material-info-btn-next{
        height: 250px;
    }
    .material-info-btn-prev-arrow p{
        width: 30px;
        height: 30px;
        border-width: 2px;
        left: 20px;
        font-size: 20px;
        padding-right: 2px;
        top: calc(50% - 15px);
    }
    .material-info-btn-next-arrow p{
        width: 30px;
        height: 30px;
        border-width: 2px;
        padding-left: 3px;
        right: 20px;
        font-size: 20px;
        top: calc(50% - 15px);
    }
    .material-info-btn-prev-arrow span,
    .material-info-btn-next-arrow span{
        width: calc(80% - 60px);
        font-size: 16px;
    }
    
    .material-info-left{
        width: calc(100% - 500px);
    }
    .material-info-right{
        width: 500px;
        height: calc((300 / 600) * 500px);
    }
}
@media only screen and (max-width: 1000px){
    .material-all-box{
        width: 750px;
    }
    .material-line:nth-child(2){
        display: none;
    }
    .material-info-left{
        width: calc(100% - 325px);
        padding: 20px 30px;
    }
    .material-info-right{
        width: 325px;
        height: calc((300 / 600) * 325px);
    }
    .material-info-pages-box{
        margin-top: 10px;
    }
}
@media only screen and (max-width: 768px){
    .material-box{
        padding-top: 52px;
        padding-bottom: 50px;
    }
    .material-all-box{
        width: 550px;
    }
    .material-info-l{
        padding: 0 30px;
    }
    .material-info-title-box{
        font-size: 22px;
    }

    
    .material-info-btn-prev,
    .material-info-btn-next {
        height: 100px;
    }
    
    .material-info:nth-child(n){
        flex-direction: column-reverse;
    }
    .material-info-left{
        width: 100%;
        padding: 20px 30px;
    }
    .material-info-right{
        width: 100%;
        height: calc((300 / 600) * 550px);
    }
    .material-info{
        position: relative;
    }
    .material-info-tag{
        position: absolute;
        top: -53px;
    }
}
@media only screen and (max-width: 550px){
    .material-box{
        padding-bottom: 30px;
    }
    .material-all-box{
        width: 400px;
    }
    .material-info-l{
        padding: 0 20px;
    }
    .material-info-title-box{
        font-size: 20px;
    }
    .material-info-edit-box{
        font-size: 14px;
        line-height: 2.4;
        padding: 20px 0;
    }
    .material-info-h3{
        font-size: 16px;
        margin-top: 10px;
        margin-bottom: 10px;
    }
    .material-info-btn-box{
        padding: 10px 0;
    }
    .material-info-btn{
        width: calc(100% - 92px);
    }
    .material-info-btn-back-box{
        margin: 0 40px;
    }
    
    .material-info-btn-prev-arrow p{
        width: 24px;
        height: 24px;
        left: 10px;
        font-size: 16px;
        padding-right: 2px;
        top: calc(50% - 12px);
    }
    .material-info-btn-next-arrow p{
        width: 24px;
        height: 24px;
        padding-left: 3px;
        right: 10px;
        font-size: 16px;
        top: calc(50% - 12px);
    }
    .material-info-btn-prev-arrow span,
    .material-info-btn-next-arrow span{
        width: calc(100% - 68px);
        font-size: 16px;
    }

    .material-info-left{
        padding: 10px 10px;
    }
    .material-info-right{
        height: calc((300 / 600) * 400px);
    }
    .material-info-text-name{
        font-size: 18px;
    }
    .material-info-text{
        font-size: 14px;
        margin-top: 5px;
    }
    .material-info-pages-box{
        margin-top: 10px;
    }
    .material-info-pages{
        font-size: 14px;
        margin-right: 10px;
        margin-top: 5px;
    }
    .material-info:nth-child(n + 2) {
        margin-top: 30px;
    }
}
@media only screen and (max-width: 400px){
    .material-all-box{
        width: 300px;
    }
    .material-info-title-box{
        font-size: 18px;
    }
    .material-info-l{
        padding: 0 10px;
    }
    .material-info-edit-box{
        font-size: 12px;
        line-height: 2;
        padding: 10px 0;
    }
    .material-info-h3{
        font-size: 14px;
        margin: 5px 0;
    }
    .material-info-btn-back{
        font-size: 12px;
    }
    .material-info-btn-back-box{
        margin: 0 20px;
    }
    .material-info-btn-prev-arrow{
        align-items: flex-end;
        -webkit-align-items: flex-end;
    }
    .material-info-btn-next-arrow{
        align-items: flex-start;
        -webkit-align-items: flex-start;
    }
    .material-info-btn-prev-arrow p{
        left: 5px;
    }
    .material-info-btn-next-arrow p{
        right: 5px;
    }
    .material-info-btn-prev-arrow span, .material-info-btn-next-arrow span{
        width: calc(100% - 30px);
        box-sizing: border-box;
        padding: 0 5px;
    }
    .material-info-right{
        height: calc((300 / 600) * 300px);
    }
}




/*animation*/

@media only screen and (min-width: 1001px){
    .material-info-edit-box,
    .material-line,
    .material-info-fb-box,
    .material-info-btn-back,
    .material-info-btn-prev,
    .material-info-btn-next{
        opacity: 0;
    }
    .material-info-edit-box.anima,
    .material-info-fb-box.anima,
    .material-info-btn-back.anima{
        animation: fade 1s ease 0s 1 both;
    }
    .material-line.anima{
        opacity: 1;
        animation: width-100 .8s linear 0s 1 both;
    }
    .material-info-btn-prev.anima{
        animation: fadeInRight 1s ease 0s 1 both;
    }
    .material-info-btn-next.anima{
        animation: fadeInLeft 1s ease 0s 1 both;
    }

    
    .material-info-btn-prev:hover .main-bg,
    .material-info-btn-next:hover .main-bg{
        transform: scale(1.1);
    }
}