We have a theme update coming tomorrow, to match the latest update of the Responsive parent. But till then, add this to your child-theme.css within the media query for 480px or less.
[code]
.cart-collaterals .cart_totals, .cart-collaterals .shipping_calculator, .cart-collaterals .cross-sells {
width: 100%;
}
table.shop_table {
font-size: 9px;
line-height: 1em;
}
[/code]