Configuration Center - reserved area polish

[ghost]

Neaten reserved area in binary lxqt-config (Configuration Center):

• The margin could be made even.
• Some helpful text could be added to the left of the 'Close' button.

  

Context

Decoration

System Information

• LXQt 1.1
• Package version: 1.1.0

[tsujan]

You're talking about things that depend on the active Qt style:

The close button is that of Qt