.business_box { width: 100%; height: auto; }
.business_box .business_item { width: 100%; height: 600px; margin-top: 10px; }
.business_box .business_item:first-child { margin-top: 0px; }

.business_box .business_item .business_item_list {
	width: 33.333%; height: 100%;
	background-position: center center;
    background-repeat: no-repeat;
    background-size: cover;	
}

.business_box .business_item .business_item_list:first-child { margin-left: 0px; }


.business_box .business_item .business_item_list .box_bg { 
	top: 0px; left: 0px;
	width: 100%; height: 100%;
	background-color: #574d9f;
	opacity: 0;
}

.business_box .business_item .business_item_list:hover .box_bg { opacity: 0.9; }

.business_box .business_item .business_item_list .txt_box {
	top: 50%; left: 50%;
	width: 340px; height: auto; min-height: 200px;
	-webkit-transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);
	transform: translate(-50%, -50%);
	padding: 30px 0px;
	z-index: 2;
	box-sizing: border-box;
}

.business_box .business_item .business_item_list .txt_box .bg {
	top: 0px; left: 0px; 
	width: 100%; height: 100%;
	background-color: #000;
	opacity: 0.6;
	z-index: 1;
}

.business_box .business_item .business_item_list .txt_box .txt {
	width: 100%; height: auto; line-height: 1.5;
	text-align: center; font-size: 26px; color: #fff;
	z-index: 2;
}
 
.business_box .business_item .business_item_list .txt_box .desc {
	width: 100%; height: auto; line-height: 1.5;
	text-align: center; font-size: 14px; color: #fff;
	margin-top: 15px;
	z-index: 2;	
}


@media (max-width: 479px){ 
	.business_box .business_item .business_item_list .txt_box { width: 210px; }
	.business_box .business_item .business_item_list .txt_box .txt { font-size: 16px; }
	.business_box .business_item .business_item_list .txt_box .desc { font-size: 12px; }
	.business_box .business_item { height: auto; }
	.business_box .business_item .business_item_list { width: 100%; height: 450px; }
}

@media (max-width: 749px) and (min-width: 480px) { 
	.business_box .business_item .business_item_list .txt_box { width: 210px; }
	.business_box .business_item .business_item_list .txt_box .txt { font-size: 18px; }
	.business_box .business_item { height: auto; }
	.business_box .business_item .business_item_list { width: 50%; height: 450px; }
	.business_box .business_item .business_item_list:nth-child(3) { width: 100%; height: 500px; }
}

@media (max-width: 1023px) and (min-width: 750px) { 
	.business_box .business_item .business_item_list .txt_box { width: 220px; }
	.business_box .business_item .business_item_list .txt_box .txt { font-size: 20px; }
	.business_box .business_item { height: 450px; }
}


@media (max-width: 1279px) and (min-width: 1024px) { 
	.business_box .business_item .business_item_list .txt_box { width: 280px; }
	.business_box .business_item { height: 500px; }
}


/*
@media (max-width: 479px){ 

}

@media (max-width: 749px) and (min-width: 480px) { 

}

@media (max-width: 1023px) and (min-width: 750px) { 

}


@media (max-width: 1279px) and (min-width: 1024px) { 
	
}
*/