How to expand course area in player

Hello, I would like to ask someone for help. Need to expand course area to the whole player (use only narrow margins of player, but dont know how to do it). I attach Flat template screenhot were it is perfect solved. But in my course I see margins and can not hide them. Can you help me to fix my problem? I try many changes, but no success. Even I have saved player from Flat template and use it for my course, but margins are there :-( thanks for help, correct Flat screenshot and wrong my course appearing in attachment.

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