Hello,
of course it's possible via Css, but before this you have to note that this new feature works thanks to new html elements and css command in the frontend file css.
We have notice that you didn't use at all the HikaShop default frontend file css, that's why you don't have the required css command in order to have this :
Now, on
first build of the 4.4.2 the required command was in the frontend css file, that was an error, then on the last build it's
now on the hikashop.css file, and so if you update your HikaShop now, you will have these commands, that will correct
most of your current display issue.
There will surely be adjustments to be made to better suit your expectations.
Hope this will help you to get what you need.
Regards