.large_screen_div { display: block; border: 0; padding: 0; margin: 0; }

.small_screen_div { display: none; border: 0; padding: 0; margin; 0; } 
 
.large_screen_div_tablecell { display: table-cell; } 

.small_screen_div_tablecell { display: none; }  

.large_screen_div_inline_block { display: inline-block; }

.med_screen_div_tablecell { display: none; } 

.item_table { width: auto; }

.right_div { display: inline-block; width: 30%; } 

.left_div { display: inline-block;  width: 30%; vertical-align: top !important; } 

.cart_items { width: 100%; }

.cart_items_container { width: 100%; }