problem with styleSheet for QDateEdit

[DarthRamone]

Hi everyone. Firstly, I want apologize for my bad english.
I'v got a problem with design for my QDateEdit.

QDateEdit { 
    border: 1px solid gray;
    border-radius: 2px; 
    background: white; 
    selection-background-color: lightblue; 
};

QDateEdit { 
    border: 1px solid gray;
    border-radius: 2px; 
    background: white; 
    selection-background-color: lightblue; 
};

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That's the current style, and it looks bad, because of ugly buttons for increment/decrement.
Now it looks like:
1.PNG

I tried to correct buttons, set the border-style: none, background is none, either. Here is problem:
2.PNG
Buttons are dissapeared. I don't know, what I have to do, I want to see only arrows, no borders, no backgrounds, no any mention of the buttons. In fact, there are no any buttons, as I want, but there are no arrows, either, and that's is problem.
Once again, I apologize for my english.