@-webkit-keyframes fadeInDown{0%{opacity:0;transform:translate3d(0,-100%,0)}to{opacity:1;transform:translateZ(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translate3d(0,-100%,0)}to{opacity:1;transform:translateZ(0)}}.header{align-items:center;background-color:transparent!important;display:flex;height:var(--header-height);left:0;position:absolute;top:0;transition:var(--transition);width:100%;z-index:111}@media only screen and (max-width:767px),only screen and (min-width:768px) and (max-width:991px),only screen and (min-width:992px) and (max-width:1199px){.header{padding:15px 0}}.header-sticky.is-sticky{-webkit-animation-duration:1s;animation-duration:1s;-webkit-animation-fill-mode:both;animation-fill-mode:both;-webkit-animation-name:fadeInDown;animation-name:fadeInDown;background-color:var(--header-background-color);border:none;box-shadow:0 0 30px rgba(0,0,0,.1);position:-webkit-sticky;position:fixed;top:0}@media only screen and (max-width:767px),only screen and (min-width:768px) and (max-width:991px){.header-row-2{display:none}}.header-center{max-width:240px}@media only screen and (max-width:767px),only screen and (min-width:768px) and (max-width:991px){.header-center{max-width:none}}@media only screen and (max-width:767px){.header-center{min-height:auto}}.header-row-1{align-items:center;gap:15px;padding:20px 0 10px}.header-row-1,.header-row-2{display:flex;justify-content:flex-end}.header-row-2{margin-right:10px}.d-tablet{width:1%}.tablet-language{display:none}.header-logo{display:flex;height:70px;line-height:1;width:187.32px}@media only screen and (max-width:767px),only screen and (min-width:768px) and (max-width:991px){.header-row-1{flex:0 0 auto;max-width:none}.header-logo{height:auto;width:150px}.d-tablet{display:flex;width:40%}.tablet-language{display:block;margin-right:40%}.header-sticky.is-sticky{display:none}}.header-main-menu-nav ul.header-sub-menu-1{display:flex;flex-wrap:wrap;list-style:none;margin:0;padding:0}.header-main-menu-nav>ul.header-sub-menu-1{gap:0 44px}@media only screen and (min-width:1200px) and (max-width:1549px){.header-main-menu-nav>ul.header-sub-menu-1{gap:0 20px}}@media only screen and (min-width:992px) and (max-width:1199px){.header-main-menu-nav>ul.header-sub-menu-1{gap:0 32px}}.header-main-menu-nav>ul.header-sub-menu-1{position:relative}.header-main-menu-nav>ul.header-sub-menu-1>li>a{color:var(--menu-link-color);display:flex;font-size:16px!important;font-weight:500;gap:7px;line-height:25px;padding:0 0 20px!important;text-transform:capitalize!important}.header-main-menu-nav>ul.header-sub-menu-1>li>a .sub-menu-toggle{align-self:center;display:flex}.header-main-menu-nav>ul.header-sub-menu-1>li:hover>a{color:#dbb052!important}.header-main-menu-nav>ul.header-sub-menu-1>li:hover>ul{opacity:1;visibility:visible}.header-main-menu-nav>ul.header-sub-menu-1 ul{background-color:#fff;background-image:url(https://vsss.edu.vn/hubfs/transparent-shield.png)!important;background-position:50%;background-repeat:no-repeat;border-radius:5px;box-shadow:0 5px 10px rgba(0,0,0,.1);column-count:2;flex-direction:column;left:0;opacity:0;padding:10px 0;position:absolute;top:40px;transition:var(--transition);visibility:hidden;width:706px;z-index:99}.header-main-menu-nav>ul.header-sub-menu-1>li:last-child ul ul ul{left:100%;right:auto}.header-main-menu-nav>ul.header-sub-menu-1 li:last-child ul ul ul ul,.header-main-menu-nav>ul.header-sub-menu-1 li:nth-last-child(-n+3) ul ul{left:auto;right:100%}.header-main-menu-nav>ul.header-sub-menu-1 li:nth-last-child(-n+3) ul ul ul{left:100%;right:auto}.header-main-menu-nav>ul.header-sub-menu-1 ul li ul{left:100%;margin-left:0;top:0}.header-main-menu-nav>ul.header-sub-menu-1 ul li:hover>ul{margin-bottom:10px;opacity:1;visibility:visible}.header-main-menu-nav>ul.header-sub-menu-1 ul>li ul ul ul{left:100%;right:auto}.header-main-menu-nav ul.header-sub-menu-1 ul li a{color:#393939!important;display:flex;font-size:var(--body-font-size);font-size:14px!important;padding:5px;text-transform:capitalize!important}.header-main-menu-nav ul.header-sub-menu-1 ul li a:hover{color:#dbb052}li.no-sub-menu.sub-menu{margin:0!important;padding-left:0!important}ul.header-sub-menu-2>li.no-sub-menu.sub-menu:hover a.navs-link{color:#393939;font-size:16px;font-weight:600;line-height:24px}ul.header-sub-menu-2>li.no-sub-menu.sub-menu:hover a.navs-link:before{content:url(https://vsss.edu.vn/hubfs/image-menu-item-active.png);left:-10px;position:relative;top:3px;z-index:100000}li.no-sub-menu.sub-menu:hover{color:#dbb052!important}.thumbnail-menu{height:100%;margin-left:10px;max-width:max-content;width:288px!important}.header-social-item{margin-right:0!important}ul.header-social-item{list-style:none;padding-left:0}ul.header-social-item>li{background:#fff;border-radius:50px;height:25px;margin:0 10px 10px;text-align:center;width:25px}ul.header-social-item li a{margin:auto}ul.header-social-item li a img{margin-bottom:5px}@media only screen and (max-width:575px){.header-row-1 .btn{display:block;font-size:12px;padding:15px}}@media only screen and (max-width:479px){.header-row-1 .btn{display:none}}