:root {
  interpolate-size: allow-keywords;
}

header {
	display: flex;
	position: fixed;
	width: 100%;
	/* border-bottom: solid 1px gray; */
	padding: 11px 0;
	justify-content: center;
	font-size: 14px;
	background: white;
	transition: 1s;
	z-index: 99;
}

.visible {
	top: 0px;
}

.invisible{
	top: -65px; 
}


.gnbTransparent {
	background: rgba(0, 0, 0, 0);
	color: white;
}

.gnbTransparent:hover {
	background: white;
	color: black;
}

.gnbTransparent:hover .title{
    filter: brightness(0)
}

nav > ul{
	display: flex;
	padding-left: 50px;
	text-align: center;
}

nav > ul > li {
	padding-right: 50px;
}

nav > ul > li:hover .sub{
	height: auto;
	border-bottom: solid 2px #0b106a;
}

.title {
	height: 20px;
}

.sub {
	height: 0px;
	overflow: hidden;
	transition: 1s;
	line-height: 40px;
	border-bottom: solid 2px #d1d1d1; 
	color: black;
}