.about_inner {
	width: 80vw;
	margin: 0 auto;
	box-sizing: border-box;
}
@media only screen and (max-width: 640px){
	.about_inner {
		width: 100vw;
		margin: 0 auto;
	}
}
.about_top_visu {
	padding-bottom: 40px;
	margin: 0;
	position: relative;
}
.about_box {
	margin-bottom: 100px;
	text-align: center;
}
.about_box p {
	margin: 0 0 60px;
	font-size: 18px;
	line-height: 2.5rem;
}
@media only screen and (max-width: 640px){
	.about_top_visu {
		padding-bottom: 10px;
	}
	.about_box {
		margin-bottom: 70px;
		text-align: left;
	}
	.about_box p {
		margin: 0 0 10px;
		padding: 15px;
		font-size: 14px;
		line-height: 2.2;
	}
}