How to make a Dark Prismarine Stairs in Minecraft

How to craft Dark Prismarine Stairs

1. Open your Crafting Table so you have the 3x3 crafting grid.
2. Place Dark Prismarine in the top-left slot.
3. Place Dark Prismarine in the middle-left slot.
4. Place Dark Prismarine in the center slot.
5. Place Dark Prismarine in the bottom-left slot.
6. Place Dark Prismarine in the bottom-middle slot.
7. Place Dark Prismarine in the bottom-right slot.
8. The Dark Prismarine Stairs will appear in the result box to the right.
9. Move the Dark Prismarine Stairs to your inventory.