@charset "utf-8";

.main-visual {
	position: relative;
}

.main-visual img {
	margin: 0 auto;
}

.sdfaier {
	margin: 20px 0;
	padding: 10px;
	border: 1px dashed #000;
}

.sdfaier p {
	line-height: 2em;
	font-weight: bold;
	text-align: center;
}

.sale {
	position: absolute;
	width: 200px;
	bottom: 30px;
	right: 30px;
}

.sale a:active,
.sale a:hover {
	position: absolute;
	width: 200px;
	bottom: -5px;
	right: -5px;
}

.studydeskday {
	padding: 50px;
	font-weight: bold;
	text-align: center;
	width: calc(100% - 20px);
	max-width: 1000px;
	margin: 5px auto;
	background: var(--main-studydays-color);
	border-radius: 30px;
	-webkit-border-radius: 30px;
	-moz-border-radius: 30px;
	-ms-border-radius: 30px;
	-o-border-radius: 30px;
}

.sdd-logo {
	margin: 30px auto 50px;
}

.sdd-logo img {
	max-width: 434px;
}


/* anker navigation */

nav ul {
	display: flex;
}

nav ul li {
	flex-grow: 1;
	position: relative;
	border-right: 2px solid #d9d9d9;
}

nav ul li::before,
nav ul li::after {
	content: "";
	position: absolute;
	border-right: 2px solid #ffffff;
	left: -2px;
	height: 50px;
}

nav ul li::before {
	top: 0;
}

nav ul li::after {
	bottom: 0;
}

nav ul li:first-child::after {
	border-right: none;
}

nav ul li:last-child {
	border-right: none;
}

div.nav-img {
	width: 100%;
	max-width: 130px;
	margin: 10px auto;
}

div.nav-alink {
	display: table;
	width: 100%;
}

div.nav-alink p {
	display: table-cell;
	text-align: center;
	font-weight: bold;
	vertical-align: middle;
	height: 100px;
	margin: 0;
	font-size: 2.6rem;
}

@media screen and (max-width: 750px) {

	.sale {
		width: 150px;
		bottom: 20px;
		right: 10px;
	}

	.sale a:active,
	.sale a:hover {
		position: absolute;
		width: 150px;
		bottom: -5px;
		right: -5px;
	}


	.studydeskday {
		width: calc(100% - 20px);
		max-width: 700px;
		padding: 10px;
	}

	.studydeskday p {
		line-height: 2em;
	}

	.sdd-logo {
		margin: 10px auto 20px;
	}

	.sdd-logo img {
		max-width: 250px;
		margin-bottom: 10px;
	}

	nav {
		max-width: 750px;
		width: calc(100% - 10px);
		padding: 5px;
		margin: 10px auto 50px;
	}

	nav ul {
		gap: 5px;
		flex-wrap: wrap;
		justify-content: flex-start;
	}

	nav ul li {
		width: calc(50% - 10px);
		border: 2px solid #d9d9d9;
		border-radius: 20px;
		padding: 20px;
		height: 150px;
		-webkit-border-radius: 20px;
		-moz-border-radius: 20px;
		-ms-border-radius: 20px;
		-o-border-radius: 20px;
	}

	nav ul li:last-child {
		border: 2px solid #d9d9d9;
	}


	nav ul li::before,
	nav ul li::after {
		display: none;
	}

	div.nav-img {
		max-width: 60px;
		margin: 0px auto;
		display: table;
	}

	div.nav-img img {
		display: table-cell;
		vertical-align: middle;
	}

	div.nav-alink p {
		display: table-cell;
		text-align: center;
		font-weight: bold;
		vertical-align: middle;
		height: 60px;
		margin: 0;
		font-size: 1.8rem;
	}
}