.center-wrap{ display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; }
.center-wrap .img-box { box-sizing: border-box; flex: 0 0 calc(40% - 30px); }
.center-wrap .center-txt { flex: 0 0 calc(60% - 30px); }
@media screen and (max-width:768px) {
	.center-wrap .img-box { flex: 0 0 100%; margin-bottom: 30px; }
	.center-wrap .center-txt { flex: 0 0 100%; }
}