@media screen and (min-width: 751px) {
	html{
		/* font-size: 20px; */
		background-color: #F4F4F4;
		min-width: 1200px;
	}
	a:hover{
		text-decoration: none;
	}
	/* 中部 */
	.middle{
		width: 100%;
		max-width: 1600px;
		margin: 0 auto;
		min-height: calc(100vh - 300px);
	}
	.middle_content{
		width: 90%;
		margin: 0 auto;
		min-height: 10rem;
		background-color: white;
		border-radius: 5px;
		padding-bottom: 2rem;
		margin-bottom: 2rem;
	}
	.middle_content_title{
		display: block;
		width: 90%;
		margin: 0 auto;
		min-height: 3rem;
		line-height: 3rem;
		text-align: center;
		font-weight: bold;
		font-size: 1.2rem;
		padding-top: 2rem;
		padding-bottom: 1rem;
	}

	.middle_content p{
		text-indent:2em;
		text-align: justify;
		padding-left: 2rem;
		padding-right: 2rem;
		font-size: 18px;
		line-height: 2em;
	}

	.middle_content img{
		max-width: 60%;
		display: block;
		margin: 1rem auto;
	}
	.middle_content_span{
		display: block;
		width: 100%;
		height: 2rem;
		margin: 0 auto;
		font-size: 16px;
		text-align: center;
	}
	.middle_content_headline{
		display: block;
		height: 2rem;
		margin-top: 1rem;
		margin-left: 2rem;
		font-weight: bold;
		font-size: 16px;
	}
}

@media screen and (max-width: 750px) {
	html{
		font-size: 14px;
		background-color: #F4F4F4;
	}
	a:hover{
		text-decoration: none;
	}
	/* 中部 */
	.middle{
		width: 100%;
		max-width: 1600px;
		margin: 0 auto;
		min-height: calc(100vh - 200px);
	}
	.middle_content{
		width: 94%;
		margin: 0 auto;
		min-height: 10rem;
		background-color: white;
		border-radius: 5px;
		padding-bottom: 2rem;
		margin-bottom: 2rem;
	}
	.middle_content_title{
		display: block;
		width: calc(100% - 2rem);
		height: 2rem;
		line-height: 2rem;
		text-align: center;
		font-weight: bold;
		font-size: 16px;
		padding: 2rem 1rem;
	}
	
	.middle_content p{
		text-indent:2em;
		text-align: justify;
		padding-left: 2rem;
		padding-right: 2rem;
		font-size: 14px;
		line-height: 2em;
	}
	
	.middle_content img{
		max-width: 60%;
		display: block;
		margin: 1rem auto;
	}
	.middle_content_span{
		display: block;
		width: 100%;
		height: 2rem;
		margin: 0 auto;
		font-size: 12px;
		text-align: center;
	}
	.middle_content_headline{
		display: block;
		height: 2rem;
		margin-top: 1rem;
		margin-left: 2rem;
		font-weight: bold;
		font-size: 16px;
	}
}