.logo img {
	width: 100%;
}
#main {
	float: none;
	margin: 0 auto;
}
.r18 {
	color: #000;
	text-align: center;
	font-weight: bold;
	margin-top: 1em;
}
.button {
	display: -webkit-flex;
	display: flex;
	-webkit-justify-content: center;
	justify-content: center;
	text-align: center;
	-webkit-align-items: center;
	align-items: center;
	margin: 2em 0;
}
.button a {
	color: #fff;
	font-weight: bold;
	display: block;
	transition: 1s;
}
.button a:hover {
	color: #e6a4ff;
}
.enterbutton {
	width: 35%;
	background: #000;
	margin-right: 100px;
	font-size: 32px;
	transition: 1s;
}
.enterbutton:hover,
.leavebutton:hover {
	box-shadow: 0px 0px 0px 3px #e6a4ff;
}
.enterbutton a {
	padding: 30px;
	letter-spacing: 4px;
}
.leavebutton {
	background: #000;
	width: 20%;
	font-size: 20px;
	transition: 1s;
}
.leavebutton a {
	padding: 20px;
	letter-spacing: 2px;
}
.indexbn {
	margin: 0 auto;
	text-align: center;
}

.indexbn img {
	vertical-align: bottom;
	width: auto;
	max-width: 100%;
}

.caution {
	background: rgba(255, 255, 255, 0.8);
	padding: 10px;
}
.caution ul {
	list-style: square;
	margin-left: 1em;
}
@media screen and (min-width: 771px) {
	.sp {
		display: none;
	}
}
@media screen and (max-width: 770px) {
	.r18 {
		font-size: 13px;
	}
	.button {
		display: block;
	}
	.enterbutton {
		width: 60%;
		margin-left: auto;
		margin-right: auto;
		font-size: 20px;
		margin-bottom: 1.5em;
	}
	.enterbutton a {
		padding: 20px;
		letter-spacing: 4px;
		box-shadow: 0px 0px 0px 2px #e6a4ff;
		color: #e6a4ff;
	}
	.leavebutton {
		width: 35%;
		margin-left: auto;
		margin-right: auto;
		font-size: 16px;
	}
	.leavebutton a {
		padding: 12px;
		letter-spacing: 2px;
	}
	.indexbn img {
		width: auto;
		max-width: 100%;
		height: auto;
	}
}