li + ul {
	display: none;
}
li:hover + ul {
	display: block;
}
li + ul:hover {
	display: block;
}

li > ul {
	display: none;
}
li:hover > ul {
	display: block;
}


li.im img:nth-child(even) {
	display: none;
}

li.im img:nth-child(odd) {
	display: inline-block;
}

li.im:hover img:nth-child(odd) {
	display: none;
}

li.im:hover img:nth-child(even) {
	display: inline-block;
}



li.im  button {
	padding: 1px;
	height: 100%;
	display: inline-block;
	border-style: none;
	background-color: transparent;
	background-repeat: no-repeat;
	background-position: 0 0;
	background-size: 100% 100%;
	background-image: url('src/dir32_0.png');
	overflow: visible;
}

li.im:hover button {
	padding: 0px;
	background-image: url('src/dir32_1.png');
}



li.url button {
	padding: 1px;
	height: 100%;
	display: inline-block;
	border-style: none;
	background-color: transparent;
	background-repeat: no-repeat;
	background-position: 0 0;
	background-size: 100% 100%;
	background-image: url('src/url_0.svg');
	overflow: visible;
}

li.url:hover button {
	padding: 0px;
	background-image: url('src/url_1.svg');
}
li.doc button {
	padding: 1px;
	height: 100%;
	display: inline-block;
	border-style: none;
	background-color: transparent;
	background-repeat: no-repeat;
	background-position: 0 0;
	background-size: 100% 100%;
	background-image: url('src/doc_0.svg');
	overflow: visible;
}

li.doc:hover button {
	padding: 0px;
	background-image: url('src/doc_1.svg');
}

@media (max-width:800px){
	li.dir button {
		background-image: url('src/dir16_0.png');
	}
	li.dir:hover button {
		background-image: url('src/dir16_1.png');
	}

}

@media (min-width:2560px){
	li.dir button {
		background-image: url('src/dir64_0.png');
	}
	li.dir:hover button {
		background-image: url('src/dir64_1.png');
	}
}






header > div {
	display: inline-block;
	width: 100%;
	background-color: transparent;
	background-image: url('src/banner.jpg');
	background-repeat: no-repeat;
	background-size: 100% 100%;
	color: #202020;
	text-align: center;
}
header > div:hover {
	color: #202020;
}


nav {
	display: flex;
	font-size: 3vw;
	font-weight: bold;
	flex-wrap: nowrap;
	justify-content: space-between;
	align-items: baseline;
}

nav div, a {
	display: inline;
	color: #202020;
}


nav a {
	text-decoration: none;
}

nav > a {
	line-height: 3vw;
}

nav p:hover, div:hover, a:hover {
	color: #0040B0;
}
nav span:hover {
	color: #202020;
}


.menu {
	height: 3vw;
	margin: 1vw;
	border: 1px solid transparent;
}

.menu_drop {
	background-color: transparent;
	margin:0;
	overflow: visible;
	border-style: none;
}


.menu_drop > div {
	position: relative;
	display: block;
	z-index: 0;
	width: 100%;
	height: 12vw;
	background-color: #b0b0b0;
	border: 1px solid #808080;
	border-radius: 0.25vw;
	opacity: 0;
	transition-property: opacity;
	transition-duration: 1.5s;
	padding: 0.5vw;
	top: -4vw;
}

.menu_drop:hover > div {
	opacity: 1;
}




.menu a {
	display: block;
}

.imgbtn {
	display: inline-block;
	position: relative;
	background-color: transparent;
	border-style: none;
	height: 3.5vw;
	margin: 0.25vw;
	top: 0.25vw;
}

span > img {
	height: 3vw;
}


.imgbtn > img {
	height: 100%;
	margin: 0;
}

.imgbtn > img:nth-child(even) {
    display: none;
}

.imgbtn > img:nth-child(odd) {
    display: inline;
}


.imgbtn:hover > img:nth-child(odd) {
    display: none;
}

.imgbtn:hover > img:nth-child(even) {
    display: inline;
}



#btn_info {
	display: inline-block;
	background-color: transparent;
	border-style: none;
	height: 3vw;
	width: 3vw;
	margin: 0.5vw;
	right: 0;
	background-repeat: no-repeat;
	background-size: 100%;
	background-image: url('src/Info_0.svg');
}
#btn_info:hover {
	background-image: url('src/Info_1.svg');
}


#txt_search {
	font-size: 2vw;
	background-color: #fff;
	height: 3vw;
	width: 10vw;
	border-style: solid;
	border-width: 1px;
	border-color: #808080;
	border-radius: 0.5vw;
	transition-property: width;
	transition-duration: 1s;
}

#txt_search:hover {
	width: 20vw;
}

#txt_search:focus {
	width: 30vw;
}


#txt_l {
	font-size: 2vw;
	background-color: #fff;
	height: 2.5vw;
	width: calc(100% - 3vw);
	border-style: solid;
	border-width: 1px;
	border-color: #808080;
	border-radius: 0.5vw;
}