@charset "utf-8";
/* layout.css는 전체적인 레이아웃 스타일을 정의합니다. */

.only-desktop {display:block;}
.only-tablet {display:none;}
.only-mobile {display:none;}
.only-desktop-tablet {display:block;}

#wrapper {position:relative; overflow:hidden;}

#skipToContent a {z-index:100000;position:absolute;top:0;left:0;width:1px;height:1px;font-size:0;line-height:0;overflow:hidden}
#skipToContent a:focus, 
#skipToContent a:active {width:200px;height:50px;background:#21272e;color:#fff;font-size:14px;font-weight:bold;text-align:center;text-decoration:none;line-height:50px}

.contain {position:relative; width:100%; max-width:1460px; padding-left:30px;padding-right:30px; margin:0 auto;}
.contain:after {content:" "; display:block; clear:both;}


/* header */
#header  {position:absolute; z-index:90; left:0; top:0; width:100%; transition:0.2s all ease;}
#header .contain {position:relative; max-width:1780px; padding-left:30px; padding-right:30px;}
.sitelogo {position:absolute; left:30px; top:50%; margin-top:-26px; z-index:10; }
.sitelogo a {display:block;width:285px; height:52px; background-repeat:no-repeat; background-position:50% 50%; background-size:contain; background-image:Url("../images/common/logo.png"); text-indent:-999em; overflow:hidden;}

#gnb {width:100%;}
#gnb > ul {position:relative; display:flex; justify-content: flex-end;}
#gnb > ul > li {position:relative;text-align:center;}
#gnb > ul > li > a {display:flex; transition:none; padding:0 66px; font-size:20px; font-weight:600; height:100px; line-height:1.4em; letter-spacing:-0.04em; color:#fff; position:relative; align-items: center; justify-content: center;}
#gnb > ul > li.active > a {background:#1462ad;}

#gnb .submenu {position:absolute; display:none; left:0; width:100%; text-align:center; z-index:21;}
#gnb .submenu ul {position:relative; padding:15px 0; background:#1462ad;}
#gnb .submenu ul li {line-height:1.4em; transition:0.2s all ease; padding:11px 0;}
#gnb .submenu ul li a {position:relative; display:block; font-size:16px; font-weight:400; letter-spacing:-0.04em; color:#fff; line-height:1.2em; transition:0.2s all ease;}
#gnb .submenu ul li:hover a {text-decoration:underline;} 

.q-link #wrapper {padding-top:100px;}
.q-link #header {border-bottom:1px solid #ddd;}
.q-link .sitelogo a {background-image:url("../images/common/logo2.png");}
.q-link #gnb > ul > li > a {color:#242424;}
.q-link #gnb > ul > li.active > a {color:#fff; background:#1462ad;}
.q-link .all-btn-menu span,
.q-link .all-btn-menu span:before,
.q-link .all-btn-menu span:after {background:#2c2c2c;}


/* for mobile */
.btn-m-menu {display:none; position:absolute; top:50%; margin-top:-12px; right:30px; width:27px; height:24px; text-align:center; text-indent:-9999em; z-index:92; transition: all 0.5s ease-in-out;}
.btn-m-menu span {position:absolute; left:0; top:10px; height:2px; width:27px;background:#fff;}
.btn-m-menu span:before,
.btn-m-menu span:after {content:" "; position:absolute; right:0; width:27px; height:2px; background:#fff; transition-duration:0.3s, 0.3s; transition-delay:0.3s, 0s;}
.btn-m-menu span:before {top:-10px; transition-property:top, transform;}
.btn-m-menu span:after {bottom:-10px; transition-property:bottom, transform;}

.mobile-navigation {position:fixed; top:0; right:0; padding:20px 0; width:300px; height:100%; overflow:auto; transition:.3s ease-in-out; -ms-transform:translateX(100%); transform:translateX(100%); background:#fff; z-index:101;}
.mobile-navigation .home {padding-bottom:20px; padding-left:15px;}
.mobile-navigation .home img {height:30px; width:auto;}
.mobile-navigation .nav-menu>ul>li {border-bottom:1px solid #ddd;}
.mobile-navigation .nav-menu>ul>li>a {position:relative; padding:14px 15px; display:block; color:#2c2c2c; font-size:1.3em; font-weight:500; line-height:1.3em;}
.mobile-navigation .nav-menu>ul>li.active>a {color:#1462ad;}
.mobile-navigation .nav-menu>ul>li>a:after {content:""; position:absolute; top:50%; right:15px; transform:translateY(-75%) rotate(45deg); width:10px; height:10px; border-right:2px solid #1462ad; border-bottom:2px solid #1462ad;}
.mobile-navigation .nav-menu>ul>li.active>a:after{transform: translateY(-35%) rotate(-135deg); border-color: #1462ad;}
.mobile-navigation .nav-menu .submenu {display:none; position:static; transform: translateX(0); margin:-1px 0 0 0; width:100%;  padding:10px 0;background:#1462ad; padding-bottom:10px;}
.mobile-navigation .nav-menu .submenu>ul {display:block; width:100%;}
.mobile-navigation .nav-menu .submenu>ul>li {text-align:left; padding:0;}
.mobile-navigation .nav-menu .submenu>ul>li>a {display:block; position:relative; padding:5px 0 5px 25px; color:#fff; font-size:16px; font-weight:400; line-height:1.3em;}
.mobile-navigation .nav-menu .submenu>ul>li>a:after {content:"";position:absolute; top:14px; left:15px; width:4px; height:4px; border-radius:100%; background:#fff; transition:.2s ease-in-out;}
.mobile-navigation .nav-menu .submenu>ul>li>a:hover {color:#fff}
.mobile-navigation .nav-menu .submenu>ul>li>a:hover:after {background:#fff}
.mobile-navigation .close {position:absolute; top:20px; right:18px; width:24px; height:24px; text-indent:-9999em; overflow:hidden;}
.mobile-navigation .close:before,
.mobile-navigation .close:after {content:" "; position:absolute; top:12px; left:0; width:100%; height:2px; background:#1462ad;}
.mobile-navigation .close:before {transform:rotate(45deg);}
.mobile-navigation .close:after {transform:rotate(-45deg);}
.mobile-overlay {display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:#000; opacity:.76; z-index:98;} 

html.menu-opened {overflow:hidden;}
html.menu-opened .mobile-navigation {-ms-transform:translateX(0); transform:translateX(0);}
html.menu-opened .mobile-overlay {display:block;}

/* all-menu */

.all-btn-menu {display:block; position:absolute; top:0; right:0; width:100px; height:100px; text-align:center; text-indent:-9999em; z-index:92; transition: all 0.5s ease-in-out;}
.all-btn-menu span {position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); height:2px; width:32px;background:#fff;}
.all-btn-menu span:before,
.all-btn-menu span:after {content:" "; position:absolute; left:50%; margin-left:-16px; width:32px; height:2px; background:#fff; transition-duration:0.3s, 0.3s; transition-delay:0.3s, 0s;}
.all-btn-menu span:before {top:-10px; transition-property:top, transform;}
.all-btn-menu span:after {bottom:-10px; transition-property:bottom, transform;}


.all-navigation .close {position:absolute; top:36px; right:36px; width:33px; height:33px; text-indent:-9999em; overflow:hidden; z-index:30;;}
.all-navigation .close:before,
.all-navigation .close:after {content:" "; position:absolute; top:12px; left:0; width:100%; height:3px; background:#fff; border-radius:3px;}
.all-navigation .close:before {transform:rotate(45deg);}
.all-navigation .close:after {transform:rotate(-45deg);}

.all-navigation {position:fixed; top:0; right:-100%; z-index:99; max-width:650px; padding-left:70px; width:100%; height:100vh; transition: all 0.3s ease-in-out; background:url("../images/common/all_bg.png") no-repeat right 107%  #1462ad; box-shadow:-5px 0 10px 0 rgba(0,0,0,0.4);}
.all-navigation .menu {}
.all-navigation .menu>ul {display:flex;flex-direction: column; justify-content: center; height:100vh;}
.all-navigation .menu>ul>li {background:0; position:relative; padding:20px 0;}
.all-navigation .menu>ul>li:last-child {margin-bottom:0;}
.all-navigation .menu>ul>li>a {font-size:32px; line-height:1.4em; font-weight:600; color:#fff; display:inline-block; padding-bottom:6px; position:relative;}
.all-navigation .submenu {display:none; padding-left:20px; margin-top:20px;}
.all-navigation .submenu ul li {margin-bottom:27px;}
.all-navigation .submenu ul li:last-child {margin-right:0;}
.all-navigation .submenu ul li a {font-size:16px; font-weight:400; line-height:2em; color:#fff; display:inline-block; padding-right:50px; position:relative; opacity:0.5;}
.all-navigation .submenu ul li a:before {content:""; position:absolute; width:16px; height:10px; background:url("../images/common/arrow.png") no-repeat 50% 50%; background-size:contain; right:0; top:50%; margin-top:-5px; transition:0.2s all ease; transform:translateX(-10px); opacity:0;}
.all-navigation .submenu ul li a:hover {opacity:1;}
.all-navigation .menu>ul>li:hover .submenu ul {height:auto;}

html.allmenu-opened .all-navigation {right:0;}
html.allmenu-opened #gnb>ul>li:hover>a {color:#454545}
html.allmenu-opened #gnb .submenu {display:none !important;}
html.allmenu-opened #gnb .submenu ul li:hover a:after {display:none;}

/* main */ 

.main-visual {position:relative;}
.main-visual .item img {width:100%;}
.main-visual .mv-ctrl {position:absolute; display:flex; align-items:center; justify-content:center; bottom:33%; z-index:1; left:50%; transform:translateX(-50%);}
.main-visual .mv-ctrl > button {display:block; width:8px; height:8px; background-repeat:no-repeat;  background-position:50% 50%; background-size:contain; text-indent:-999em; overflow:hidden; border:0; background-color:transparent;}
.main-visual .mv-ctrl .play {background-image:url("../images/main/play.png"); display:none;}
.main-visual .mv-ctrl .stop {background-image:url("../images/main/stop.png");}
.main-visual .mv-dots {margin-right:28px;}
.main-visual .slick-dots {display:flex; margin:0 -12px;;}
.main-visual .slick-dots li {padding:0 12px; position:relative;}
.main-visual .slick-dots li.slick-active:before {content:""; position:absolute; width:20px; height:20px; border-radius:100%; left:5px; top:0; border:1px solid #e5e5e7; top:-7px;}
.main-visual .slick-dots li button {display:block; width:6px; height:6px; background:#fff; border-radius:100%; border:0; text-indent:-999em; overflow:hidden;}
.main-visual .scroll {display:flex; flex-direction:column; align-items:center; justify-content:center;  position:absolute; bottom:77px; text-align:center; width:100%; font-size:13px; font-weight:500; line-height:1em; letter-spacing:0.02em; color:#fff; animation:move_up_down 2s linear infinite;}
.scroll span {display:block; transform:rotate(90deg); margin-top:10px; animation:txtup 1.5s infinite; border-left:5px solid #fff; border-top:5px solid transparent; border-bottom:5px solid transparent; opacity:0.3;}
.scroll span:nth-of-type(1){animation-delay:0.1s;}
.scroll span:nth-of-type(2){animation-delay:0.2s;}
.scroll span:nth-of-type(3){animation-delay:0.3s;}

@-webkit-keyframes txtup {
    0% {opacity:0.3}
	20%{opacity:1;}
	40%{opacity:0.3;}
	60%{opacity:0.3;}
	80%{opacity:0.3;}
	100%{opacity:0.3;}
}
@keyframes txtup {
    0% {opacity:0.3}
	20%{opacity:1;}
	40%{opacity:0.3;}
	60%{opacity:0.3;}
	80%{opacity:0.3;}
	100%{opacity:0.3;}
}

.txt-white {color:#fff !important;}
.main-sec {padding:100px 0;}
.main-tit span {font-weight:700; line-height:1em; letter-spacing:-0.02em; color:#1462ad; display:block; margin-bottom:14px;}
.main-tit h2 {font-size:48px; font-weight:700; line-height:1.2em; letter-spacing:-0.02em;}

.main-about .main-tit {margin-bottom:50px;}
.main-about .txt {font-size:20px; font-weight:600; letter-spacing:-0.02em; margin-bottom:80px;}
.main-more a {display:inline-block; padding-right:47px; position:relative; font-size:18px; font-weight:600; line-height:1.2em; letter-spacing:-0.02em;}
.main-more a:hover:before {transform:rotate(360deg);}
.main-more a:before {content:""; position:absolute; width:28px; height:28px; border-radius:100%; background:url("../images/main/plus.png") 50% 50% no-repeat; right:0; top:50%; margin-top:-14px; transition:0.1s all ease-in-out;}
.main-about .contain {max-width:1780px;}
.main-about .about-bg {padding:100px 160px; background:url("../images/main/about_bg.jpg") no-repeat 50% 50%; background-size:cover;}
.about-menu {padding-right:160px; margin-top:-125px;}
.about-menu ul {display:flex; justify-content:flex-end;}
.about-menu ul li a {display:block; width:250px; height:250px; display:flex; align-items:flex-end; padding:40px;}
.about-menu ul li a:hover {transform:translateY(-20px);}
.about-menu ul li .tit {flex: 1 1 auto; min-width: 0; width: 1%; font-size:20px; font-weight:600; line-height:1.2em; letter-spacing:-0.02em; color:#454545;}
.about-menu ul li .tit span {display:block; line-height:1em; font-size:14px; color:#f0f0f0; margin-bottom:14px;}
.about-menu ul li:nth-child(1) a {background:#1462ad url("../images/main/about_icon1.png") 40px 40px no-repeat;}
.about-menu ul li:nth-child(2) a {background:#f0f0f0 url("../images/main/about_icon2.png") 40px 40px no-repeat;}
.about-menu ul li:nth-child(2) .tit span {color:#909090;}
.about-menu ul li:nth-child(3) a {background:#90c84b url("../images/main/about_icon3.png") 40px 40px no-repeat;}

.main-business {background:url("../images/main/business_bg.jpg") no-repeat 50% 50%; background-size:cover;}
.main-business .main-tit {margin-bottom:44px;}
.main-business .page-menu ul {background:#4d6173; border:0;}
.main-business .page-menu ul li a {color:#fff;}

.page-menu {text-align:center; margin-bottom:50px;}
.page-menu ul {display:inline-flex; background:#fff; border-radius:100vh; overflow:hidden; width:auto; border:1px solid #ddd;}
.page-menu ul li {width:auto;}
.page-menu ul li a {color:#fff;display:flex; width:200px; height:64px; font-size:18px; font-weight:400; line-height:1.2em; letter-spacing:-0.02em; color:#686868; justify-content:center; align-items:center;}
.page-menu ul li.active a {background: linear-gradient(to right, #28729e, #7db85a); border-radius:100vh; color:#fff;}

.project-list ul li a {display:block; position:relative;}
.project-list .slick-list {margin:0 -10px;}
.project-list .slick-slide {margin:0 10px;}
.project-list ul li .thumb {position:relative; padding-bottom:119.40%; overflow:hidden;}
.project-list ul li .thumb img {position:absolute; top:50%; left:0; transition:.4s ease-in-out; transform:translateY(-50%); -ms-transform:translateY(-50%); -webkit-transform:translateY(-50%); width:100%; height:auto !important; max-width:100%; min-height:100%; object-fit:cover;}

.project-list ul li .tit {position:absolute; left:0; bottom:0; display:flex; height:70px; align-items:center; padding:10px 30px; background:#fff; width:calc(100% - 50px); font-size:20px; font-weight:600; line-height:1.2em; letter-spacing:-0.02em; color:#242424; transition:0.2s all ease;}
.project-list ul li .tit:before {content:""; position:absolute; width:28px; height:28px; background:url("../images/main/plus2.png") no-repeat 50% 50%; background-size:contain; right:14px; top:50%; margin-top:-14px;}
.project-list ul li a:hover .tit {background:#1462ad; color:#fff;}

.project-list .slick-arrow {position:absolute; z-index:1; width:54px; height:54px; border-radius:100%; background-color:#fff; border:0; display:block; text-indent:-999em; overflow:hidden; background-position:50% 50%; background-repeat:no-repeat; top:50%; margin-top:-27px;}
.project-list .slick-prev {background-image:url("../images/main/slide_prev.png"); left:-124px;}
.project-list .slick-next {background-image:url("../images/main/slide_next.png"); right:-124px;}

.main-cont-wrap .wrap {display:flex; justify-content:space-between; margin-bottom:60px;}
.main-cont-wrap .main-notice {width:calc(50% - 35px);}
.main-notice .main-tit {margin-bottom:47px;}
.notice-list {border-top:2px solid #333;}
.notice-list ul li {border-bottom:1px solid #ddd;}
.notice-list ul li a {display:flex; align-items:center; padding:25px 0;}
.notice-list ul li a:hover .date,
.notice-list ul li a:hover .tit {color:#1462ad;}
.notice-list ul li .date {min-width:95px; text-align:center; font-size:14px; font-weight:500; line-height:1.4em; letter-spacing:-0.02em; color:#454545;}
.notice-list ul li .date span {display:block;	 font-size:22px; font-weight:700; line-height:1.4em;}
.notice-list ul li .tit {padding-left:29px; white-space:nowrap;overflow:hidden;text-overflow:ellipsis;  flex: 1 1 auto; min-width: 0; width: 1%; font-size:18px; font-weight:400; line-height:1.2em; letter-spacing:-0.02em; color:#454545;}

.main-cont-wrap .banner {padding:60px 10px; background:url("../images/main/qna_bg.jpg") no-repeat 50% 50%; background-size:cover;}
.main-cont-wrap .banner .main-tit {margin-bottom:35px;}
.main-cont-wrap .banner .txt {font-size:20px; font-weight:600; line-height:1.2em; letter-spacing:-0.02em; margin-bottom:40px;}

/* sub page */ 
.sub-visual {position:relative; width:100%; height:600px; padding:100px 0 50px; display:flex; align-items:center; overflow:hidden; background-repeat:no-repeat; background-position:50% 50%; background-size:cover;}
.sub-visual .content {position:relative; z-index:1; max-width:1260px; padding:0 30px; width:100%; margin:0 auto; color:#fff; text-align:center;}
.sub-visual .content h2 {font-size:60px; font-weight:700; line-height:1em; letter-spacing:-0.04em;}
.sub-visual .background {
	position:absolute; 
	top:0; 
	left:0;
	width:100%; height:100%;	
	background-position:50% 50%;
	background-repeat:no-repeat;
	background-size:cover;
	transform:scale(1.09);
    -ms-transform:scale(1.09); /* IE 9 */
    -moz-transform:scale(1.09); /* Firefox */
    -webkit-transform:scale(1.09); /* Safari and Chrome */
    -o-transform:scale(1.09); /* Opera */
	transition: all 2s ease-out 0s;
	transition-delay: 0.1s;
	z-index:0;
}
.sub-visual.load .background {
	transform:scale(1);
    -ms-transform:scale(1); /* IE 9 */
    -moz-transform:scale(1); /* Firefox */
    -webkit-transform:scale(1); /* Safari and Chrome */
    -o-transform:scale(1); /* Opera */
}

.sub-visual2 {padding:120px 0; background:#f8f8f8; margin-bottom:70px;}
.sub-visual2 h2 {text-align:center; font-size:60px; font-weight:700; line-height:1.2em; letter-spacing:-0.03em; color:#242424; margin-bottom:55px;}
.sub-title.ver2 {margin-bottom:40px;}
.sub-title.ver2 h2 {padding-bottom:45px; border-bottom:1px solid #ddd;}
.sub-title {margin:100px auto; text-align:center; width:100%; max-width:1400px;}
.sub-title h2 {position:relative; color:#242424; font-size:54px; line-height:1.2em; font-weight:700; letter-spacing:-0.03em;}

#lnb {position:relative; margin-top:-50px;}
#lnb:before {content:""; position:absolute; height:100%; width:50%; background:#1462ad;}
.lnb {position:relative; max-width:1400px; margin:0 auto; padding:0 30px !important;}
.lnb ul {display:flex; width:100%; margin:0 -39px;}
.lnb ul li {position:relative; width:auto; text-align:center; letter-spacing:-.04em; padding:0 39px;}
.lnb ul li:before {content:""; position:absolute; width:4px; height:4px; background:#fff; border-radius:100%; right:-2px; top:50%; margin-top:-2px; opacity:0.5;}
.lnb ul li:last-child:before {display:none;}
.lnb ul li a {position:relative; display:flex; align-items:center; justify-content:center;  height:100px; color:#fff; font-weight:400; font-size:19px; line-height:1.4em; opacitY:0.5;}
.lnb ul li.active a {opacity:1;}

.page-menu2 {margin-bottom:80px;}
.page-menu2 ul {display:flex; flex-wrap:wrap;}
.page-menu2 ul li {width:25%; flex:1 0 auto; border:1px solid #ddd; margin-left:-1px; margin-top:-1px;}
.page-menu2 ul li a {display:flex; justify-content:center; align-items:center; height:64px; text-align:center; background:#fff;font-weight:400; line-height:1.2em; letter-spacing:-0.02em; color:#878787;}
.page-menu2 ul li a span {position:relative; padding-left:12px;}
.page-menu2 ul li a span:before {content:""; position:absolute; width:4px; height:4px; background:#878787; border-radius:100%; left:0; top:50%; margin-top:-2px; transition:0.2s all ease;}
.page-menu2 ul li a:hover,
.page-menu2 ul li.active a {color:#fff; background:#1462ad;}
.page-menu2 ul li a:hover span:before,
.page-menu2 ul li.active a span:before {background:#fff;}

.page-menu3 {border-left:1px solid #ddd; border-top:1px solid #ddd;}
.page-menu3 ul {display:flex; flex-wrap:wrap;}
.page-menu3 ul li {width:calc(20% + 1px);  border:1px solid #ddd; margin-left:-1px; margin-top:-1px;}
.page-menu3 ul li a {display:flex; justify-content:center; align-items:center; height:64px; text-align:center; background:#fff;font-weight:400; line-height:1.2em; letter-spacing:-0.02em; color:#878787;}
.page-menu3 ul li a:hover,
.page-menu3 ul li.active a {color:#fff; background:#1462ad;}

.page-menu4 {margin:0 auto; width:100%; max-width:1400px;}
.page-menu4 ul {display:flex; justify-content:center; flex-wrap:wrap; margin:-10px;}
.page-menu4 ul li {padding:10px;}
.page-menu4 ul li a {display:flex; width:200px; height:60px; align-items:center; justify-content:center; text-align:center; font-weight:400; line-height:1.2em; letter-spacing:-0.02em; color:#878787; border:1px solid #ddd;}
.page-menu4 ul li.active a,
.page-menu4 ul li a:hover {background:#1462ad; border-color:#1462ad; color:#fff; font-weight:600;}

#contArea {max-width:1460px; padding-left:30px; padding-right:30px; margin:0 auto;}
#contArea.wide {max-width:100%; padding-left:0; padding-right:0;}

.real-cont {padding-bottom:100px;}
.real-cont.none {padding-bottom:0;}



/* footer */
#footer {position:relative; color:#909090; background:#1a1a1a; font-size:15px; line-height:1.5em; padding:60px 0 70px;}
#footer .contain {max-width:1460px;}
#footer address {font-style:normal;  font-weight:400; letter-spacing:-0.03em; }
#footer address strong {display:block; margin-bottom:16px; font-size:16px; font-weight:500; line-height:1.2em; letter-spacing:-0.03em; color:#fff;}
#footer address span {display:inline-block;}
#footer address .addre > span {color:#fff; padding-right:10px;}
#footer address .bar {display:inline-block; width:1px; height:12px; background:#f5f5f5; margin:0 8px; vertical-align:middle; opacity:0.3;}
#footer .copyright {display:block; margin-top:38px; padding-top:28px; border-top:1px solid #5f5f5f;}
#footer .copyright a {display:inline-block; padding-left:12px;}

.f-menu {position:absolute; right:30px; bottom:0;}
.f-menu ul {display:flex; justify-content:flex-end;}
.f-menu ul li {color:#fff;}

.member-btn {position:absolute; right:30px; top:0;}
.member-btn a {display:inline-block; padding:16px 38px; line-height:1em; font-size:16px; font-weight:400; letter-spacing:0; color:#fff; border:1px solid #5f5f5f;}


.scroll-top {display:block; position:fixed; right:100px; bottom:200px; width:50px; height:50px; border:1px solid #f5f5f5; text-align:center; background: #1a1a1a; opacity:0; z-index:70; padding-top:23px; font-size:14px; font-weight:400; line-height:1em; color:#909090;}
.scroll-top:before {content:""; position:absolute; left:50%; transform:rotate(-90deg); top:12px; margin-left:-2.5px; margin-left:;border-left:5px solid #fff; border-top:5px solid transparent; border-bottom:5px solid transparent;}
.scroll-top.active {opacity:1;}