checkout page not responsive in mobile view

-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.5.8
-- PHP version -- : 5.5.3

the checkout page not responsive in mobile view, it is nearly impossible to see the checkout order details
screencast.com/t/7mRWPuM1o

Hello,
Using some CSS code like media queries will probably help you to do it, here is a thread where you'll find an example :

You can do the modifications in the frontend css file via the menu Configuration > Display > CSS
Use the @media tags to change the width of the columns when the width of the page is less than xx.

ex:
@media (max-width: 767px) {
.hikashop_products .row-fluid .span4 { width: 49% !important;}
}

Here is some documentation about the layout customization:
www.hikashop.com/support/documentation/1...ize-the-display.html