The box consists of two parts: the cover and the card tray.
To close it, push both parts together until they click into place.
To open it, press both white surfaces together and pull the halves apart.
My card dimensions are 87 mm x 56 mm, with a stacking height of 34 mm. The maximum possible stacking height is 40 mm.
The UNO logo is trademarked by Mattel, and is not part of the CC license. You are not allowed to use the logo commercially, or in anyway where it can be mistaken for an official product from Mattel.
The author remixed this model.
I have colored the model.