.subBanner {
    width: 100%;
    height: 200px;
    background: url(../images/RND_b.jpg) ;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 100% 60%;

}//end of subBanner

.active_fixBtn {
    overflow: hidden;
    width : 38px !important;
    height: 28px !important;
    background-color: #0061a9 !important;;

}

.trn_anc {
    transform: rotate(90deg) !important;
}

.fixMenu {
    display: none;
    position: fixed;
    right: 10px;
    top: 50%;
    width: 315px;
    height: 160px;
    background-color: rgba(000,000,000,0.4);
    transition: 0.3s;
    
    

    >p {
        cursor: pointer;
        float: right;
        margin-right: 5px;
        padding-top : 10px;
        width: 30px;
        height: 20px;
        transform: rotate(-90deg);
        background-image: url(../images/anchor.png);
        background-repeat: no-repeat;
        background-position: 50% 50%;
        background-size: 50%;
        transition: 0.2s;

        &:hover {
            background-position: 50% 100%;
        }
    }

    >ul {
        margin-top: 7px;

        >li {
            overflow: hidden;
            position: relative;
            width: 100%;
            margin-top: 2px;
            border-bottom: 1px solid rgba(255,255,255,0.4);

            &:last-child {
                border-bottom: none;
            }

            >a {
                
                display: block;
                width: 100%;
                height: 30px;
                line-height: 30px;
                font-size: 13px;
                padding-left: 25px;
                color: #fff;
                transition : 0.2s;

                &:hover {
                    background-color: #0061a9;
                }
                
                
                &:after {
                    position: absolute;
                    top: 0px;
                    left: 10px;
                    width: 30px;
                    height: 30px;
                    transform: translateX(-50%) rotate(-90deg);
                    background-image: url(../images/anchor.png);
                    background-size: 50%;
                    background-repeat: no-repeat;
                    background-position: 50% 50%;
                    border-radius: 30px;
                    display: block;
                    height: 30px;
                    content: '';

                }
            }

        }
    }
}




.rndContainer {
    width: 100%;

    >p {
        display: none;
    }

    >ol {
      display: none;   
    }
    
    
    >ul {
        width: 1200px;
        margin: 0px auto;
    
        >li {
            text-align: center;
    
            &:nth-child(1) {
                position: relative;
                width: 1200px;
                margin: 80px auto 0;
                text-align: center;
                font-size: 50px;
                font-weight: 600;
                color: #000;
                text-transform: uppercase;
    
                &:after {
                    position: absolute;
                    bottom: -25px;
                    left: 50%;
                    width: 100px;
                    margin-left : -50px;
                    height: 5px;
                    background-color: #000;
                    content: "";
                }
            }
    
            &:nth-child(2) {
                padding-top: 40px;
                font-size: 20px;
                line-height: 2.5em;
            }
    
        }
    }//end of ul


    >.rndWrapper {
        height: 1000px;
        

        >div {
            position: relative; //all achor relative
            width: 100%;
            height: 800px;
            background-repeat: no-repeat;
            background-size: cover;

            

           

            >ul {
                position: relative;
                width: 1200px;
                margin: 50px auto 0;

                >li {
                    float: left;

                    &:first-child {
                        overflow: hidden;
                        margin-right: 30px;
                        width: 570px;
                        height: 400px;
                        background-position: 50% 50%;
                        background-repeat: no-repeat;

                        >img {
                            width: 100%;
                            height: 100%;
                        }

                        >video {
                            width: 100%;
                            height: 100%;
                            background-color: #000;
                        }


                        
                    }

                    &:last-child {
                        width: 600px;
                        height: 400px;

                        >dl {
                            position: relative;
                            padding-top: 20px;
                            color: #fff;
                            z-index: 0;

                            &:after {
                                position: absolute;
                                top: 0px;
                                left: -15px;
                                width: 620px;
                                height: 400px;
                                background-color: rgba(000,000,000,0.7);
                                content: '';
                                z-index: -1;
                            }

                            >dt {
                                margin-top: 20px;
                                font-weight: 600;
                                font-size: 23px;
                                z-index: 1;

                            }
                            >dd {
                                margin: 20px 0 40px;
                                line-height: 1.3em;
                                font-size: 16px;
                                letter-spacing: 1px;

                                >ul {

                                    >li {
                                        margin-right: 20px;
                                        width: 180px;
                                        float: left;
                                        height: 120px;
                                        //background-size: cover;
                                        //background-repeat: no-repeat;
                                        //background-position: 50% 50%;
                                        box-sizing: border-box;
                                        cursor: pointer;

                                        &:first-child {
                                            border: 3px solid orange;
                                        }

                                        >img {
                                            width: 100%;
                                            height: 100%;
                                        }

                                        >video {
                                            cursor: pointer;
                                            width: 100%;
                                            height: 100%;
                                        }

                                        

                                    }
                                }

                            }
                        }
                    }//end of 설명 부분 li


                }//end of li
            }


            >.rndInfo {
                width: 1200px;
                height: 450px;
                margin: 50px auto 0;
                background-color: rgba(000,000,000,0.7);
                overflow-y: scroll;

                &::-webkit-scrollbar {
                    width: 8px;
                    height: 8px;
                    border: 1px solid #fff;
                }//스크롤 관련 css
                &::-webkit-scrollbar-track {background: #efefef;
                    -webkit-border-radius: 10px;
                    border-radius:10px;
                    -webkit-box-shadow: inset 0 0 4px rgba(0,0,0,.2);
                 }//스크롤 관련 css

                 &::-webkit-scrollbar-thumb {
                    height: 50px;
                    width: 50px;
                    background: rgba(0,0,0,.2);
                    -webkit-border-radius: 8px;
                    border-radius: 8px;
                    -webkit-box-shadow: inset 0 0 4px rgba(0,0,0,.1);
                 }//스크롤 관련 css
                

                >.innerScroll {
                    width: 100%;
                    height: auto;

                    >ul {
                        padding: 30px 20px;
                        font-size: 16px;

                        &:first-child {
                            padding-top: 50px;
                        }

                        >li {
                            color: #fff;
                            line-height: 1.7em;
                            margin-bottom: 20px;

                        }

                        >.techIntroduceTitle {
                            margin-bottom: 10px;
                            font-size: 21px;
                            font-weight: 600;
                            
                        }

                        >.techIntroduceImg {
                            >span {
                                width: 1000px;
                                >img {
                                    width: 80%;
                                }
                            }
                        }//end of techIntroduceImg
                        >.techIntroduceHandle {
                            width: 1150px;
                            //background-color: orange;
                            >dl {
                                margin-right: 30px;
                                width: 350px;
                                float: left;
                                padding-top: 30px;

                                >dd {
                                    >img {
                                        width: 90%;
                                    }

                                    &:last-child {
                                        height: 50px;
                                        //background-color: orange;
                                        //line-height: 1.2em;
                                    }
                                }
                            }
                        }//end of techIntroduceHandle

                        >.techIntroduceChart {
                            >dl {
                                margin-top: 10px;

                                >dt {
                                    font-weight: 600;
                                }

                                >dd {
                                    padding-left: 25px;
                                }
                            }
                        }//end of techIntroduceImg
                    }
                    
                }//end of innerScroll
            }//end of rndInfo

            

            
        }//end of all div layout

        >.deepLearning {
            height: 100%;
            background-image: url(../images/car1_w.jpg);
            background-size: cover;
            background-position: 50% 50%;
            background-repeat: no-repeat;

            

        }//end of deepLearning

        >.lunarSystem {
            height: 100%;
            background-image: url(../images/moon_w.jpg);
            background-size: cover;
            background-position: 50% 30%;

        }//end of lunarSystem

        >.LiquefactionModule {
            height: 100%;
            background-image: url(../images/disaster_w.jpg);
            //background-color: gray;
            background-position: 50% 60%;
            background-size: cover;

        }//end of LiquefactionModule

        >.koreaRoadSign {
            height: 100%;
            background-image: url(../images/road_w.jpg);
            background-position: 50% 30%;

            >ul {
                >li {

                    &:nth-child(1) {
                        //background-image: url(../images/korearoad_1.png);
                    }

                    &:nth-child(2) {
                        
                        >dl > dd{

                            >a {
                                color: orange;
                                font-weight: 600;
                            }

                            &:last-child {
                                
                                >ul>li {

                                    &:nth-child(1) {
                                        
                                           // background-image: url(../images/korearoad_2.png);
                                        
                                    }

                                    &:nth-child(2) {
                                        
                                          // background-image: url(../images/korearoad_3.png);
                                        
                                    }

                                    &:nth-child(3) {
                                        
                                           // background-image: url(../images/korearoad_3.png);
                                        
                                    }

                                    
                                }
                            }
                        }
                    }

                }
            }

            

            &:after {
                display: none;

               
            }


        }//end of koreaRoadSign

    }//end of rndWrapper
}//end of rndContainer

@keyframes anchor {
    from {bottom : 50px;}
    to {bottom : 15px;}
}




@media screen and (max-width:768px) {
    
    .subBanner {
        width: 100%;
        height: 250px;//350px
        background: url(../images/RND_m.png) ;
        background-repeat: no-repeat;
        background-size: cover;
        background-position: 100% 50%;
    
    }//end of subBanner


    .fixMenu {
        display: none;
        position: fixed;
        right: 10px;
        top: inherit;//50%
        bottom : 50%;
        width: 315px;
        height: 160px;
        background-color: rgba(000,000,000,0.4);
        transition: 0.3s;
        
        
    
        >p {
            cursor: pointer;
            float: right;
            margin-right: 5px;
            padding-top : 10px;
            width: 30px;
            height: 20px;
            transform: rotate(-90deg);
            background-image: url(../images/anchor.png);
            background-repeat: no-repeat;
            background-position: 50% 50%;
            background-size: 50%;
            transition: 0.2s;
    
            &:hover {
                background-position: 50% 100%;
            }
        }
    
        >ul {
            margin-top: 7px;
    
            >li {
                overflow: hidden;
                position: relative;
                width: 100%;
                margin-top: 2px;
                border-bottom: 1px solid rgba(255,255,255,0.4);
    
                &:last-child {
                    border-bottom: none;
                }
    
                >a {
                    
                    display: block;
                    width: 100%;
                    height: 30px;
                    line-height: 30px;
                    font-size: 13px;
                    padding-left: 25px;
                    color: #fff;
                    transition : 0.2s;
    
                    &:hover {
                        background-color: #0061a9;
                    }
                    
                    
                    &:after {
                        position: absolute;
                        top: 0px;
                        left: 10px;
                        width: 30px;
                        height: 30px;
                        transform: translateX(-50%) rotate(-90deg);
                        background-image: url(../images/anchor.png);
                        background-size: 50%;
                        background-repeat: no-repeat;
                        background-position: 50% 50%;
                        border-radius: 30px;
                        display: block;
                        height: 30px;
                        content: '';
    
                    }
                }
    
            }
        }
    }//end of fixMenu




    .rndContainer {
        position: relative;
        height: auto;

        >p {
            display: block;
        }
    
        >ol {
          display: block;   
        }

        >p {
            position: absolute;
            top: 15px;
            right: 30px;
            z-index: 9999;
            
            
            >a {
                padding: 10px;
                //width: 40px;
                //height: 40px;
                text-align: center;
                font-size: 30px;
                font-weight: 900;
                color: #333;
                background-color: #ddd;
            }

        }

        >ol {
            position: absolute;
            top:15px;
            right: 20px;
            z-index: 9999;
    
            >li {
                float: left;
    
                
                >a {
                    padding: 10px;
                        //width: 40px;
                        //height: 40px;
                        text-align: center;
                        font-size: 30px;
                        font-weight: 900;
                        color: #333;
                        background-color: #ddd;
                }
            }
    
        }

        >ul {
            width: 100%;//1200px
            margin: 100px auto;
        
            >li {
                text-align: center;
        
                &:nth-child(1) {
                    position: relative;
                    width: 100%;//1200px
                    margin: 80px auto 0;
                    text-align: center;
                    font-size: 30px;
                    font-weight: 600;
                    color: #000;
                    text-transform: uppercase;
        
                    &:after {
                        position: absolute;
                        bottom: -25px;
                        left: 50%;
                        width: 100px;
                        margin-left : -50px;
                        height: 3px;
                        background-color: #000;
                        content: "";
                    }
                }
        
                &:nth-child(2) {
                    padding-top: inherit;//40px
                    padding: 40px 20px;
                    font-size: 14px;
                    line-height: 2.5em;
                }
        
            }
        }//end of ul
    
    
        >.rndWrapper {
            height: 1200px;            
    
            >div {
                position: relative; //all achor relative
                height: 1200px;
                width: 100%;
                background-repeat: no-repeat;
                background-size: cover;
    
                &:after {
                    display: none;
                    position: absolute;
                    bottom: 50px;
                    left: 50%;
                    transform: translateX(-50%);
                    width: 30px;
                    height : 30px;
                    background: url(../images/anchor.png);
                    background-position: 50% 50%;
                    background-repeat: no-repeat;
                    background-size: cover;
                    content: '';
                    animation-name: anchor;
                    animation-duration: 1s;
                    animation-iteration-count: infinite;
    
                   
                }
    
               
    
                >ul {
                    position: relative;
                    width: 100%;//1200px
                    margin: 100px auto 0;
    
                    >li {
                        float: inherit;//left
                        text-align: center;
    
                        &:first-child {
                            overflow: hidden;
                            padding-top: 300px;//추가
                            margin-right: 30px;
                            width: 100%;//570px
                            height: 400px;
                            background-position: 50% 50%;
                            background-repeat: no-repeat;
    
                            >img {
                                width: 100%;
                                height: 70%;
                                //z-index: 9999999;
                            }
    
                            >video {
                                width: 100%;
                                height: 70%;
                            }
    
    
                            
                        }
    
                        &:last-child {
                            position: absolute;
                            top: -70px;
                            width: 100%;//600px
                            height: 400px;
    
                            >dl {
                                position: relative;
                                padding-top: 20px;
                                color: #fff;
                                z-index: 0;
    
                                &:after {
                                    position: absolute;
                                    top: -10px;
                                    left: 50%;
                                    transform: translateX(-50%);
                                    width: 100%;//620px
                                    height: 110%;//400px
                                    background-color: rgba(000,000,000,0.7);// 0.5
                                    content: '';
                                    z-index: -1;
                                }

                                
    
                                >dt {
                                    margin-top: 20px;
                                    font-weight: 600;
                                    font-size: 19px;
                                    z-index: 1;
    
                                }
                                >dd {
                                    margin: 20px 0 40px;
                                    line-height: 1.9em;
                                    font-size: 14px;
                                    letter-spacing: 1px;
                                    text-align: left;//추가
                                    padding: 0 20px;//추가

                                    

                                    &:last-child {//추가
                                        position: absolute;
                                        bottom: -150px;        
                                                                        
                                    }

    
                                    >ul {

    
                                        >li {
                                            cursor: pointer;
                                            margin-left: 0px;
                                            margin-right: 0px;
                                            width: 33.333333%;//
                                            float: left;
                                            height: 80px;
                                            //background-size: cover;
                                            //background-repeat: no-repeat;
                                            //background-position: 50% 50%;
                                            
                                            
    
                                            >img {
                                                width: 100%;
                                                height: 100%;
                                            }
    
                                            >video {
                                                
                                                width: 100%;
                                                height: 100%;
                                            }
    
                                            
    
                                        }
                                    }
    
                                }
                            }
                        }//end of 설명 부분 li
    
    
                    }//end of li
                }
    
    
                >.rndInfo {
                    width: 100%;//1200px
                    height: 410px;//450px
                    margin: -80px auto 0;//30px auto 0
                    background-color: rgba(000,000,000,0.7);
                    overflow-y: scroll;
    
                    &::-webkit-scrollbar {
                        width: 8px;
                        height: 8px;
                        border: 1px solid #fff;
                    }//스크롤 관련 css
                    &::-webkit-scrollbar-track {background: #efefef;
                        -webkit-border-radius: 10px;
                        border-radius:10px;
                        -webkit-box-shadow: inset 0 0 4px rgba(0,0,0,.2);
                     }//스크롤 관련 css
    
                     &::-webkit-scrollbar-thumb {
                        height: 50px;
                        width: 50px;
                        background: rgba(0,0,0,.2);
                        -webkit-border-radius: 8px;
                        border-radius: 8px;
                        -webkit-box-shadow: inset 0 0 4px rgba(0,0,0,.1);
                     }//스크롤 관련 css
                    
    
                    >.innerScroll {
                        width: 100%;
                        height: auto;
    
                        >ul {
                            padding: 50px 20px;
                            font-size: 16px;
    
                            >li {
                                color: #fff;
                                line-height: 1.7em;
                                font-size: 14px;
    
                            }
    
                            >.techIntroduceTitle {
                                font-size: 17px;
                                font-weight: 600;
                            }
    
                            >.techIntroduceImg {
                                >span {
                                    width: 100%;
                                    >img {
                                        width: 100%;
                                    }
                                }
                            }//end of techIntroduceImg
                            >.techIntroduceHandle {
                                width: 100%;
                                //background-color: orange;
                                >dl {
                                    margin-right: 30px;
                                    width: 350px;
                                    float: left;
                                    padding-top: 30px;
    
                                    >dd {
                                        >img {
                                            width: 90%;
                                        }
    
                                        &:last-child {
                                            line-height: 1.2em;
                                        }
                                    }
                                }
                            }
                        }
                        
                    }//end of innerScroll
                }//end of rndInfo
    
                
            }//end of all div layout
    
            >.deepLearning {
                background: #555;
                //background-image: url(../images/car1.jpg);
                background-position: 50% 30%;
                

                >ul {
                    >li:last-child {
                        >dl{
                            >dd:last-child{
                                bottom: -170px;
                                >ul{
                                    li {
                                        height: 100px;

                                        >img {
                                            height: 100px;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
                
    
            }//end of deepLearning
    
            >.lunarSystem {
                
                background-image: url(../images/moon.jpg);
                background-position: 50% 30%;
    
            }//end of lunarSystem
    
            >.LiquefactionModule {
                
                background-image: url(../images/module.jpg);
                //background-color: gray;
                background-position: 50% 90%;
                background-size: cover;

                >ul {
                    >li {

                        &:nth-child(1) {
                            padding-top: 340px;
                        }
                    }
                }
    
            }//end of LiquefactionModule
    
            >.koreaRoadSign {
                
                background-image: url(../images/road.jpg);
                background-position: 50% 30%;
    
                >ul {
                    >li {
    
                        &:nth-child(1) {
                            padding-top: 370px;
                        }
    
                        &:nth-child(2) {
                            
                            >dl > dd{
    
                                &:last-child {
                                    
                                    >ul>li {
    
                                        &:nth-child(1) {
                                            
                                               // background-image: url(../images/korearoad_2.png);
                                            
                                        }
    
                                        &:nth-child(2) {
                                            
                                              // background-image: url(../images/korearoad_3.png);
                                            
                                        }
    
                                        &:nth-child(3) {
                                            
                                               // background-image: url(../images/korearoad_3.png);
                                            
                                        }
    
                                        
                                    }
                                }
                            }
                        }
    
                    }
                }
    
                
    
                &:after {
                    display: none;
    
                   
                }
    
    
            }//end of koreaRoadSign
    
        }//end of rndWrapper
    }//end of rndContainer






}//mediaQuery 