section{text-align: center;}
/*top*********************************/
section.top {
    width: 100%;
    position: relative;
    padding-top:100px;
}

/*section.about*********************************/
section.center {
    width: 1200px;
}

section.intro {
    position: relative;
    overflow: hidden;
    margin-top: 50px;
}

section.intro > .center {
    width: 1200px;
    margin: 0 auto;
}

section.intro>img{
    width: 466px;
    height: 400px;
}

section.intro .txt {
    width: 1200px;
    float: left;
    overflow: hidden;
}

section.intro .txt > h2 {
    text-align: left;
    margin-bottom: 30px;
}

section.intro .txt > h2 > img {
    width: 762px;
    height: 44px;
}

section.intro .txt > p {
    color: #1a1a1a;
    font-size: 16px;
    line-height: 26px;
    text-align: left;
    margin-bottom: 50px;
}

section.intro .txt > p > img {
    width: /*220*/px;
    height:10.92px;
    margin-top: 6px;
}

section.intro .txt>p>br.mobile{display: none;}

.intro_img{
    overflow: hidden;
    width: 100%;
}

.intro_img img{
    float:left;
}

.intro_img img:nth-of-type(1){margin-right: 20px;}
.intro_img img:nth-of-type(3){margin-top:20px;}
.intro_img img:nth-of-type(4){margin:20px 0 0 20px;}

.intro_img .box{width:720px;  height:560px; margin-right: 20px;
float:left;}

/*illustration*/
section.illustration {
    width: 100%;
    background-color: #ffffff;
    margin-top: 150px;
}

section.illustration > .center {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    margin-bottom: 100px;
}

section.illustration > .center > h3 {
    font-size: 25px;
    position: relative;
    margin-bottom: 20px;
    font-family: 'NanumSquareEB';
}
section.illustration  > .center > h3>img{
    height: 28px;
    margin-top:5px;
}
section.illustration > .center > p > img {
    /*width: 204px;*/
    height:10.92px;
    margin-top: 6px;
}

section.illustration > .center > p {
    margin-top: 70px;
    color: #1a1a1a;
    font-size: 16px;
    line-height: 26px;
    text-align: center;
}

section.illustration > .center > h3 div.bar {
    margin-top: 20px;
    width: 50px;
    border-bottom: 3px solid #3783b6;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

section.illustration  > .center>ul{overflow: hidden;}
section.illustration  > .center>ul>li{float:left;}
section.illustration  > .center>ul>li>img:last-of-type{width: 45px;}

section.illustration  > .center>ul.mobile_txt{display: none;}
section.illustration  > .center>ul.process_txt{width: 1200px;}
section.illustration  > .center>ul.process_txt>li{width:260px;margin-left:45px; font-size: 16px;}
section.illustration  > .center>ul.process_txt>li:first-of-type{
    margin-left: 0px;
}
.illustration ul.process_pic>li:last-of-type>img:last-of-type{display: none;}
div.banner{width: 1200px; margin:auto; text-align: center;}
div.banner>img{width: 100%;}


/*scenario*********************************/

section.scenario h6 > div.bar {
    margin-top: 20px;
    width: 50px;
    border-bottom: 3px solid #3783b6;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

section.scenario .timeline{margin:70px 0 50px 0;}
.timeline2{width:;}
.timeline2>img{width:50%;}

/********************************timeline animation START*/
.fade {
    padding: 20px 30px;
    background-color: #FFFFFF;
    position: relative;
    border-radius: 6px;
    opacity: 1;
}

/** {
    box-sizing: border-box;
}*/

/* The actual timeline (the vertical ruler) */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

/* The actual timeline (the vertical ruler) */
.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #2e85cf;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

.container {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 100%;
    height: 235px;
}
.container>.fade{text-align: center;position:relative; height:203px;}
.container>.fade>.txt{position:absolute; left:50%;top:50%; transform: translate(-50%,-50%);}
.container>.fade>.txt>p{line-height: 26px;}
.container>.fade>.txt>p>strong{font-size:20px; font-family: 'NanumSquareB'; color:#184bb4;}

.container>span.step{position:absolute; left:50%;top:50%; transform: translate(-50%,-50%); z-index: 1;width:;height:100px; text-align: center; font-size:22px; font-family: 'NanumSquareEB'; color:#2e85cf;}
.container>span.step>strong{font-size:42px; line-height: 28px;}

.left::after {
    content: '';
    position: absolute;
   /* width: 25px;
    height: 25px;
    right: -17px;
    background-color: white;
    border: 4px solid #2e85cf;
    top: 15px;
    top:50%;
    transform: translateY(-50%);
    border-radius: 50%;*/
    z-index: 1;
}

/* Place the container to the left */
.left, .right {
    left: 0;
    float: left;
    width: 50%;
}

/* Place the container to the right */
.right {
    /*left: 0%;*/
    
}

.right::after {
    left: -16px;
}
.left{line-height: 243px;}


/* Media queries - Responsive timeline on screens less than 600px wide */
@media screen and (max-width: 600px) {

    /* Place the timelime to the left */
    .timeline::after {
        left: 31px;
    }

    /* Full-width containers */
    .container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    /* Make sure that all arrows are pointing leftwards */
    .container::before {
        /*left: 60px;
    border: medium solid white;
    border-width: 10px 10px 10px 0;
    border-color: transparent white transparent transparent;*/
    }

    /* Make sure all circles are at the same spot */
    .left::after,
    .right::after {
        left: 15px;
    }

    /* Make all right containers behave like the left ones */
    .right {
        left: 0%;
    }
}
.timeline{display: none ;}
.timeline2{display: block !important;}
.timeline2{width:90%; margin:0 auto;}
.timeline2>img{width:60%; margin-top:70px; margin-bottom:50px;}
/********************************timeline animation END*/




/*detail*********************************/
section.detail {
    width: 100%;
    background-color: #ffffff;
}

section.detail > .center {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    padding-bottom: 150px;
}

section.detail > .center > h4 {
    font-size: 25px;
    position: relative;
    margin-bottom: 20px;
    font-family: 'NanumSquareEB';
}

section.detail > .center > h4 div.bar {
    margin-top: 20px;
    width: 50px;
    border-bottom: 3px solid #3783b6;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

section.detail > .center > div.caro {
    margin-top: 70px;
}

section.detail > .center > div.caro>img{
    width: 478px;
    height: 350px;
}

/*분류*/
section.detail > .center > ul > li > ul {
    margin-bottom: 50px;
}

section.detail {
    margin-top: 150px;
}

section.detail > .center {
    width: 1200px;
    margin: 0 auto;
    overflow: hidden;
}

section.detail > .center > ul {
    margin-top: 100px;
    width: 550px;
    float: left;
}
section.detail > .center > ul:first-of-type{margin-left:50px;}

section.detail > .center > ul:last-of-type {
    border-left: 1px solid #1a1a1a;
    box-sizing: border-box;
    padding-left:50px;
}

section.detail ul > li {
    font-size: 16px;
    position: relative;
    text-align: left;
    padding-top: 25px;
}

section.detail ul > li > p {
    position: relative;
}

section.detail ul > li > p > span {}

section.detail ul > li > p > span:first-of-type {
    font-family: 'NanumSquareR';
    font-size: 24px;
    z-index: 1;
    bottom: 0;
}
section.detail ul > li > p > span:last-of-type {
    font-family: 'NanumSquareB';
    font-size: 30px;
    color: #c4c4c4;
    opacity: 0.2;
    bottom: 0;
    left: 0;
    position: absolute;
}

/*상세*/
section.detail ul > li {}

section.detail ul > li > ul {
    width: 50%;
    float: left;
}

section.detail ul > li.energy > ul {
    width: 33.333333%;
}

section.detail ul > li > ul > li {
    font-size: 16px;
}

section.detail ul > li > ul:last-child {
    color: #1a1a1a;
}

section.detail p>img{display: none;}

section.detail br.mobile{display: none;}
section.scenario .timeline{display: none !important;}
/*tablet&mobile*/
@media screen and (max-width:959px){
    section{width:100%; overflow: hidden; text-align: center;}
    
    section.top{width: 90%;}
    section.top>img{width: 100%;}
    section.intro{width: 90%; margin-top:30px;}
    section.intro .txt{width: 100%;}
    section.intro .txt>p{text-align:justify; margin-bottom: 30px;}
    section.intro .txt>p>br.mobile{display: block;}
    section.intro .txt > h2 {margin-bottom: 10px;}
    section.intro .txt>h2>img{width:auto !important; height: 17px !important;}
    
    div.banner{width: 90%; margin:0 auto;}
    
    section.intro>img{/*width: 100%;height: 100%;width: 466px;
    height: 400px;*/ width:70%; height:100%;}
    
    section.intro_img{overflow: hidden;}
    .intro_img img{width: 100%;}
    .intro_img img:nth-of-type(1){display: ;}
    .intro_img img:nth-of-type(3){margin-top:18px;}
    .intro_img img:nth-of-type(4){display:;}

    section.illustration{width: 90%; margin-top:50px;}
    section.illustration>.center{width: 100%; text-align: center; margin-bottom: 50px;}
    section.illustration > .center > p {text-align: justify;}
    
    section.detail > .center > div.caro{width: 90%;}
    section.detail > .center > div.caro>img{width: 70%; height: 100%;}
    .scenario>.center{width:100%;}
    .timeline2{width:100%;}
    section.detail{width: 90%; text-align: center;margin-top:50px;}
    section.detail>.center{width: 100%;}
    section.detail > .center > ul{width: 100%;}
    section.detail > .center > ul:first-of-type{margin-left:0;}
    section.detail > .center > ul:last-of-type {
    border-left:0;padding-left:0;}
    section.detail p{border-bottom: 1px solid rgba(196, 196, 196,0.2);
    }
    section.detail p>img{display: block;float:right;}
    
    section.detail ul ul{display: none;}
    section.detail ul:hover{cursor: pointer;}
    section.detail > .center > ul {
    margin-top: 0;margin-left:0;}
    
    section.detail ul > li > p > span:first-of-type {
    font-size: 20px;}
    section.detail ul > li > p > span:last-of-type {
    font-size: 25px;}
    section.detail p>img{display: block;float:right; width: 26px;margin-bottom: 2px;}
    
    section.detail ul > li.energy > ul {
    width: 50%;
}
    
    .open {
    transform: rotate(180deg);
    transition: all .25s ease;}
    
    section.detail > .center{padding-bottom: 100px;}
}
br.mobile{display: none;}
/*tablet*/
@media screen and (min-width:768px) and (max-width:959px){
    section{width:100%; overflow: hidden;}
    .illustration ul.process_pic>li{float:left;width: 310px;height: 303px;}
    section.detail > .center > div.>img{
    width: 478px;
    height: 350px;}

}


/*mobile*/
@media screen and (max-width:767px){
    br.mobile{display:block;}
    section.intro .txt > h2 > img{width: 100%;height: 100%;}
 .intro_img2{display:block;}
    
    .container>span.step{left:8%;height:50px;font-size:14px;padding:20px 20px 60px 20px;}
    .container>span.step>strong{font-size:24px;line-height:22px;}
    .left{
    left: 0;
    float: left;
    width:50%;
    padding:0;
    }
    .left>img{
        width:100%;
    }
    .right {
    left: 0;
    float: left;
   width: 50%;
}
    .right>.txt{width: 70%;}
    .left>img{vertical-align: middle;}
    
    .mobile_txt > div {
        width: 8px;
        height: 8px;
        border-radius: 100%;
        background-color: #888888;
        float: left;
        margin:
            /*4*/
            9px 5px 0 0;
    }

   
    .mobile_txt{margin-top:10px; text-align: left;}
    .mobile_txt>div{ width: 8px;height: 8px; border-radius: 100%; background-color: #888888; float:left; margin:/*4*/9px 5px 0 0;}
    .mobile_txt>p{margin-top:5px;}
    
    .intro_img{width:100%;}
   /* .intro_img>img{float:left;}*/
    .intro_img>img:nth-of-type(1){width:58%;margin-right: 10px;}
    .intro_img>img:nth-of-type(2){width:38%;}
    .intro_img>img:nth-of-type(3){width:38%; margin-right: 10px; margin-top:10px;}
    .intro_img>img:nth-of-type(4){width:58%; margin-left:0px; margin-top:10px;}
    
    
    section.illustration  > .center > h3>img{/*width: 324px;height: 18px;*/display:none;}
    section.illustration > .center>img{width: 100%; margin:30px 0;}
    section.detail br.mobile{display: block;}
}