.list-section ul {
	display: flex;
	-webkit-column-count: inherit;
  	-moz-column-count: inherit;
  	column-count: inherit;  	
  	flex-wrap: wrap;
  	margin-top: 40px;
}
.list-section ul li{
	flex: 0 0 50%;	
}

@media(max-width: 767px){
	.list-section ul li{
		flex: 0 0 100%;	
	}
}