.div-em-colunas {
	-webkit-column-count:3; /* Chrome, Safari, Opera */
	-moz-column-count:3;    /* Firefox */
	column-count:3;         /* padrão */
}
.div-em-colunas p{
	font-size: 18px;
}

@media screen and (max-width: 768px) {
	.div-em-colunas{
		padding-left: 10px;
		padding-right: 10px;
		-webkit-column-count:1; /* Chrome, Safari, Opera */
		-moz-column-count:1;    /* Firefox */
		column-count:1;         /* padrão */
	}
}