You define your own columns and gutters, this builds your widths out for you

Column generator.

//Doing columns better thant the Greeks OR the Romans
// There are no required variables, but someone can pass how many columns in the 
// grid (that they can optionally determine with columnPX and gutterPX) they want
// an element to span. This means we can generate infinite grid systems with one mixin.

@mixin grid_builder($colSpan: 6, $columnPx: 73, $gutterPx: 15){
    //Calculate the width of the element
    $elementWidth: ($columnPx * $colSpan) + ($gutterPx * ($colSpan - 1));
    
    //inline-block to preserve the height in the browser
    display: inline-block;
    width: $elementWidth + px;
    margin-right: $gutterPx;
}//grid_builder()