Maybe I didn't specify my problem. I would like to change size of the spinbox buttons. I do this with
Qt Code: 
  1. "QSpinBox::up-button { width: 32px; }"
  2. "QSpinBox::down-button { width: 32px; }"
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and it works.
Now I have a problem with background color.
I want to change only background of spinbox area (for example yellow). When I try to do it with
Qt Code: 
  1. "QSpinBox { background-color: yellow; }"
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all elements have yellow color.
How can I prevent to change colors of buttons?

Any help is appreciated

Thank you.