/*  GRID OF FOUR   ============================================================================= */

.span_4_of_4 {width: 100%;}
.span_3_of_4 {width: 74.5%;}
.span_2_of_4 {width: 49%;}
.span_1_of_4 {width: 23.5%;}

/*  GO FULL WIDTH BELOW 480 PIXELS */
@media only screen and (max-width: 480px) {
	.col {  margin: 1% 0 1% 0%; }
	.span_1_of_4, .span_2_of_4, .span_3_of_4, .span_4_of_4 { width: 100%; }
}