.menu_btns {
	display: -webkit-flex;
    display: flex;
    -webkit-justify-content: flex-start;
    justify-content: flex-start;
    list-style: none;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
    margin-bottom:32px;
}

.menu_btns li {
	width:calc(100vw / 3);
	height:calc(100vw / 3);
	box-sizing:border-box;
	position:relative;
    background-repeat: no-repeat;
    background-size: 72%;
    background-position-x: 50%;
    background-position-y: 16%;
}

.menu_btns li:nth-child(3n+1),.menu_btns li:nth-child(3n+2) {
    border-right:solid 1px #a0a0a0;
    border-bottom:solid 1px #a0a0a0;
}

.menu_btns li:nth-child(3n) {
    border-bottom:solid 1px #a0a0a0;    
}

.menu_btns li div {
	text-align:center;
	font-size:4vw;
	width:calc(100vw / 3);
	position:absolute;
	bottom:0;
}

.ico_appinfo{
	background-image:url(../images/ico_appinfo.png);
}
.ico_camera{
	background-image:url(../images/ico_camera.png);
}
.ico_map{
	background-image:url(../images/ico_map.png);
}
.ico_news{
	background-image:url(../images/ico_news.png);
}