#pro-article{
	color: rgb(102, 102, 102);
    font-size: 17px;
    line-height: 200%;
    letter-spacing: 0.05em;
}
#pro-article .particle{
	overflow:hidden;
}
.art-h1{
	color: #212121;
	font-size: 24px;
}
.art-title-set{
	font-size: 20px;
	color:rgb(42,25,21);
	margin-bottom: 20px;
}
#pro-article .box{
	overflow:hidden;
}
.art-style01,
.art-style02{
	margin:70px 0;
}
.art-style01 .img,
.art-style02 .txt{
	float:left;
}
.art-style01 .txt,
.art-style02 .img{
	float:right;
}
#pro-article .box .img{
	width:41%;
}
#pro-article .box .txt{
	width:55%;
}

@media screen and (max-width: 640px) {
	#pro-article .box .img,
	#pro-article .box .txt{
		width:100%;
	}
	.art-style01 .txt,
	.art-style02 .img{
		margin-top:20px
	}
}