#content .content_block { min-height:initial; width:60%; margin-left:20%; }

@media only screen and (max-width: 1660px) {
	#content .content_block { width:70%; margin-left:15%; }
}

@media only screen and (max-width: 1325px) {
	#content .content_block { width:80%; margin-left:10%; }
}

@media only screen and (max-width: 1150px) {
	#content .content_block { width:90%; margin-left:5%; }
}

@media only screen and (max-width: 990px) {
	#content .content_block { width:98%; margin-left:1%; }
}