Red arrow shows the Unity’s banner ad. But it is too small and I want to fill the screen witdh. I created a gray area and It is 1080x133. It has the same ratio as 728x90 (Unity gives this resolution). How can I fill the whole area?
I would recommend building to a device to see what the test banner will actually look like, since the test banner may not take into account the screen size when in the editor.