I want to create something like this. Can someone guide me on how to or direct me to any related links
This is a common feature in all Wix articles. But this exact snippet is from https://support.wix.com/en/article/corvid-tutorial-using-the-corvid-pay-api-to-collect-payments-for-products-in-a-database-collection
Note: This might seem similar to Anchor Menu or Floating Menus , but they are not the same.