There are 2 ways a post can be shown upon clicking on the post card.
The first option is to open the post using popup and the second is to open the post in Instagram by opening a new window.
You can choose how to show the post by choosing 1 of the 3 options shown at Action on Image Click section at the end of Post Settings. You can see how each option will turn out in the gif below.
When choosing the Open in Popup option, you can enable/ disable each element will show/ disappear from both the post card and the post separately.
For the third option, the Feed will not react to any action customer does to each post card, only the hover effect remains if you choose the Tile template.
If you choose the Classic template for this choice, the options to add and remove post and card elements will also be available.