Test task for RLT
You can drag items around, swap them. If you reload the page - changes will be saved.
To add a new item, right click on empty cell.
Left-click on an item to open its "properties".
Delete all button in the bottom allows to clear inventory.
You can delete specific item or change its amount in the item properties' menu.
Use escape or click an empty cell to close properties window. You can also use close button.
made by salat23
Why no sidebar and bottom thing?
I seriously tried to do it, but elements did not want to go into the right place. I doubt it could be called responsive, but the task was completed nonetheless.