@charset "utf-8";

.head--sticky {
	position: sticky;
	top: 0;
}

header {
	background-color: #f9fafb;
	opacity: 0.9;
}

header > div {
	max-width: 680px;
	margin: 0 auto;
	padding: 10px;
	text-align: right;
}

.menu-btn > i {
	font-size: 36px;
	color: #555;
	display: inline-block;
	padding: 8px;
	cursor: pointer; /* マウスカーソルを指にする */
/*	border-radius: 50%;*/
}

/*.menu-btn > i:hover {*/
/*	background-color: #efefef;*/
/*}*/

.nav-content {
	font-weight: bold;
	font-size: 18px;
	background-color: white;
	width: 80%;
	max-width: 350px;
	height: 100%;
	position: fixed;
	top: 0;
	right: 0;
	z-index: 50;
	padding: 8px;
	overflow: auto;
	transform: translateX(100%);
	transition-duration: 300ms;
}

.nav-menu ul {
	list-style: none;
	text-align: left;
}

.nav-menu li > a {
	text-decoration: none;
	color: black;
	padding: 10px;
	display: block;
}

.nav-menu li > a:hover {
	background-color: #e2e3e5;
}

.nav-close {
	display: none;
	background-color: black;
	opacity: 0;
	width: 100%;
	height: 100%;
	position: fixed;
	top: 0;
	right: 0;
	z-index: 40;
	transition-duration: 300ms;
}

#menu-checkbox {
	display: none;
}

#menu-checkbox:checked ~ .nav-close {
	display: block;
	opacity: 0.5;
}

#menu-checkbox:checked ~ .nav-content {
	transform: translateX(0%);
}