What is the purpose of 'empty blocks' under the Blocks head on the side bar?
When I drag and drop an empty block, it shows just an empty container
If you wish to create your own block using components or your own code, you can use EMPTY Blocks
Example - if you'e looking to create a blick with 2 grids (50% each)
You can drag the "Empty block" on the Canvas
Add GRIDs to the block (using components) and add text / button / images etc in each of the grids
Alternatively, you can also code your own block (you can select code option "<>" while you edit the block)