Fix layout issue when starting with small viewport height
Fix layout issue when starting with small viewport height

zoeesilcock/piskel,smiegrin/piskel,smiegrin/piskel,juliandescottes/piskel,zoeesilcock/piskel,zoeesilcock/piskel,piskelapp/piskel,juliandescottes/piskel,piskelapp/piskel,piskelapp/piskel,GMartigny/piskel,smiegrin/piskel,GMartigny/piskel,GMartigny/piskel,juliandescottes/piskel