Thanks Guust,
On the pricing page/checkout each Package is in this format,
<div id=”geodir_price_package_1″ class=”geodir_package”>
<div id=”geodir_price_package_2″ class=”geodir_package”>
<div id=”geodir_price_package_3″ class=”geodir_package”>
How would I go about adding bootstrap classes to each of those? i.e. col-lg-4 col-xs-12 ?