@charset "UTF-8";
/* メイン画像 */
.main_back{
background-image: url(../img/main_back_flow.jpg);
width: 100%;
height: 250px;
background-size: cover;
position: absolute;
background-position: center;
}


.main_back_message {
	background: linear-gradient(to left,rgba(255,255,255,0)0,#fff 90%);
}


@media (min-width: 900px) {

	.main_back {
	height: 350px;
	}
	
}

/* 天然歯が抜けるリスク */
.flow {
	padding: 37px 0;
}

.flow_imgbox {
    display: flex;
    width: 100%;
    height: 100%;
    margin-bottom: 10px;
    flex-flow: column;
}

.flow_imgbox img {
    width: 100%;
    height: 100%;
}



@media (min-width: 900px) {
	.flow {
		padding: 95px 0 87px;
	}
	
	
	.risk_box_message {
	font-size: 18px;
	}
	
	.sub_ttl {
	font-size: 18px;
	margin-bottom: 35px;
	}
	
	.risk_box_ttl {
	font-size: 18px;
	}

	.risk_box_ttl span {
	font-size: 30px;
	}
	
	.insi {
	font-size: 15px;
	width:100px;
	height: 30px;
	line-height: 30px;
	border-radius:5px;
	margin: 25px 0px 8px;
	padding: 0px 0px;
	}
	
	.tiryou {
	font-size: 15px;
	width: 100px;
	height: 30px;
	line-height: 30px;
	border-radius: 5px;
	margin: 35px 0px 8px;
	padding: 0px 0px;
	font-weight: bold;
	}
	
	.sub_message {
	font-size: 18px;
	line-height: 2.25;
	}
}