body {
	font-family: 'Arial', sans-serif;
	background-color: #f7f7f7;
	color: #333;
	margin: 0;
	padding: 0;
}
header {
	background-color: #85b78b;
	color: white;
	padding: 20px 0;
	text-align: center;
}
nav{
	margin: 20px auto 5px;
	max-width: 750px;
	border: 2px solid #85b78b;
	border-radius: 9px;
	padding: 15px;
	font-size: 18px;
	position: relative;
	background-color: #ffffff;
}
.menu_title{
	background-color: #ffffff;
	position: absolute;
	top: -15px;
	left: 40px;
	padding: 0 20px;
	font-size: 20px;
	color: #65a76b;
	font-weight: bold;
}
ul{
	list-style-type: none;
	padding: 0px;
	text-align: left;
	margin: 14px;
}
ul li{
	padding: 6px 12px 3px;
}
ul li a{
	font-weight: bold;
	font-size: 18px;
	text-decoration: none;
	color: #75b77b;
}
h1 {
	margin: 0;
	font-size: 2.5em;
}

main {
	max-width: 900px;
	margin: 20px auto;
	padding: 20px;
}

h2 {
	color: #75b77b;
	font-size: 2em;
	border-bottom: 2px solid #75b77b;
	margin: 30px 5px;
}
img{
	width: 320px;
}
a{
	white-space: normal;
	word-break: break-all;
}
section {
	font-size: 1.1em;
	line-height: 1.6;
	background-color: white;
	padding: 15px;
	border-radius: 8px;
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
	margin-bottom: 20px;
}

footer {
	background-color: #85b78b;
	color: white;
	text-align: center;
	padding: 10px 0;
}
.admax{
	margin: 10px auto;
	text-align: center;
}
.youtube{
	width: 100%;
	aspect-ratio: 16 / 9;
}
.youtube iframe{
	width: 100%;
	height: 100%;
}
.str_bold{
	font-weight: bold;
}

.pc{
	display: block;
}
.sp{
	display: none;
}
@media (max-width: 720px) {
	section {
		font-size: 1.0em;
	}
	main {
		padding: 10px;
	}
	.pc{
		display: none;
	}
	.sp{
		display: block;
	}
}