If you have a group of blocks that are all different shapes and sizes, but want them to be uniform to a certain type of block, you can use the Format-> Unify Size option.
1. Right click on the block that you want all the other blocks to look like.
2. Hover over 'Format' and choose the 'Unify Size' option. You can either have the blocks match by Height, Width, or Both.
You will see that all the blocks are uniform and match size.
There are also additional options for aligning blocks and unifying the space inbetween them so the flow looks neat.