@media only screen and (max-width: 800px) {
	#reviews table td:nth-child(2), 
	#reviews table th:nth-child(2) {display: none;}
}
 
@media only screen and (max-width: 640px) {
	#reviews table td:nth-child(4),
	#reviews table th:nth-child(4) {display: none;}
}