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

	
.span_4_of_4 {
	width: 100%;
}
.span_3_of_4 {
	width: 74.25%;
	width: calc(74.25% - 2px);
}
.span_2_of_4 {
	width: 48.5%;
}
.span_1_of_4 {
	width: 22.75%;
}


/*  GO FULL WIDTH AT LESS THAN 480 PIXELS */

@media only screen and (max-width: 480px) {
	.span_4_of_4 {
		width: 100%; 
	}
	.span_3_of_4 {
		width: 100%; 
	}
	.span_2_of_4 {
		width: 100%; 
	}
	.span_1_of_4 {
		width: 100%; 
	}
}