/*  GRID OF THREE   ============================================================================= */

    
.span_3_of_3 {
    width: 100%; 
}

.span_2_of_3 {
    width: 65.3%; 
}

.span_1_of_3 {
    width: 31.4%; 
}


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

@media only screen and (max-width: 768px) {
    .span_3_of_3 {
        width: 100%; 
    }
    .span_2_of_3 {
        width: 100%; 
    }
    .span_1_of_3 {
        width: 100%;
    }
}