.conteudo {
	height: 600px;
	width: 100%;
}

.grid-divider {
	overflow-x: hidden;
	position: relative;
}

.grid-divider>[class*="col-"]:nth-child(n + 2):after {
	content: "";
	background-color: red;
	position: absolute;
	top: 0;
	bottom: 0;
}

@media ( max-width : 767px) {
	.grid-divider>[class*="col-"]:nth-child(n + 2):after {
		width: 100%;
		height: 1px;
		left: 0;
		top: -4px;
	}
}

@media ( min-width : 768px) {
	.grid-divider>[class*="col-"]:nth-child(n + 2):after {
		width: 1px;
		height: auto;
		left: -1px;
	}
}