#main_menu {
	font-weight: bolder;
}
#main_menu a {
	text-decoration: none;
}

.col_3-btn{
	width: 100%;
	display: flex;
	flex-wrap: wrap;
	text-align: center;
}
.col_3-btn > div{
	width: 33.33333%;
	padding: 1px;
	
}
.col_3-btn > div > div{
	position: relative;
	overflow: hidden;
}
@media screen and (max-width: 960px) {
	.col_3-btn > div{
		width: 50%;
	}
}
@media screen and (max-width: 480px) {
	.col_3-btn > div{
		width: 100%;
	}
}
#main_menu .btn {
	padding-top: 1px;
	font-size: 2rem;
	line-height: 29px;
	background: #D3D3D3;
	display: inline-block;
}
#main_menu .btn:hover {
  background    : #EEEEEE;
}
#main_menu .btn-active {
	padding-top: 1px;
	font-size: 2rem;
	color:yellow;
	line-height: 29px;
	background: #D2691E;
}
#main_menu .btn_sup {
	vertical-align:3% ;
	font-size: 1.5rem;
}

.sub_menu {
	font-size:2rem;
	line-height:1.55;
	text-align: center;
}
.sub_menu ul li ul li{
	height: 0;
	overflow: hidden;
}
.sub_menu ul li:hover ul li{
	height: auto; /*サブメニューの高さ*/
	display: inline-block;
	overflow: visible;
}
.sub_menu a {
	text-decoration: none;
}