stylesheet

[Shadowfiend]

Looks like you're out of luck in the sense that, by default, according to the docs:

Since 4.3, setting a stylesheet on a QLabel automatically sets the QFrame::frameStyle property to QFrame::StyledPanel.

Have you tried using a border? Something like:

QLabel
{
    border: 1px inset gray;
}

QLabel
{
    border: 1px inset gray;
}

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Or something similar?