.span_2_of_2 {
	width: 100%;
}

.span_1_of_2 {
	width: 54.2%;
	float:right; padding-right:10px;
}

.span_1_of_2_esq {
	width: 54.2%;
	float:left; padding-right:10px;
}

.span_1_of_2_alt {
	width: 30.2%;
	padding-left:100px;
}


@media only screen and (max-width: 480px) {
	.span_2_of_2 {
		width: 100%; 
	}
	.span_1_of_2 {
		width: 100%; 
		padding:0px;
	}
	.span_1_of_2_alt {
		width: 90%;
		padding-left:15px; 
	}
}