/* https://boolie.org/responsive-html-css-buergermenue/ */

nav {
background-color: white;
margin: 0;
padding: 0;
border: 2px solid black;
}
nav ul{
margin: 0;
padding: 0;
	list-style: none;
	float: left;
width: 250px;
border: 2px solid black;
}
nav ul li{
	float: left;
	padding: 2px 10px;
	text-align: center;
	background-color: white;
}
nav ul li{
	width: 100%;
	padding: 15px 0px;
}
nav ul {
	display: none;
}

.burgericon {
	width: 30px;
	height: 30px;
	display: none;
}
.burgericon div {
	width: 90%;
	margin: 7px 5%;
	height: 3px;
	background-color: black;
}
.burgericon {
	display: block;
}

#navigation {
	opacity: 0;
}
#navigation:checked ~ ul {
	display: block;
}
#navigation:checked ~ label .burgericon {
	margin-top: 15px; 
}
#navigation:checked ~ label .burgericon div:first-of-type{
	rotate: 45deg;
}
#navigation:checked ~ label .burgericon div:last-child{
	rotate: -45deg;
	margin-top: -10px;
}
#navigation:checked ~ label .burgericon div:nth-child(2){
	display: none;
}