Separate product cards

Is there any possibility to display several product cards for demonstration on the main page ?
Now on this page it is implemented by images with a link to the product card. (pict_1).
I can display this as a post slider. But ! In the post slider and in the slideshow also - I can't find the function to frame the picture and add a shadow to it.
This is well implemented in the categories layout. (pict2)

But how to use the function to frame the picture and add a shadow to the post slider and slideshow ?
Or how to introduce categories (with shadows and frame) then to the main page ?

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