Overview Fix Card Font size on MacOS

.. the font selections was incorrect on MacOS and
   caused the PMC card to be rendered incorrectly.

src/Charts/OverviewWindow.cpp

@@ -800,20 +800,18 @@ Card::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) {
 
     // fonts
     QFont titlefont;
-    titlefont.setPointSize(ROWHEIGHT-18); // need a bit of space
     QFont bigfont;
+    QFont smallfont;
 #ifdef Q_OS_MAC
+    titlefont.setPointSize(ROWHEIGHT); // need a bit of space
     bigfont.setPointSize(double(ROWHEIGHT)*2.5f);
+    smallfont.setPointSize(ROWHEIGHT*0.8f);
 #else
+    titlefont.setPointSize(ROWHEIGHT-18); // need a bit of space
     bigfont.setPointSize(ROWHEIGHT*2);
+    smallfont.setPointSize(ROWHEIGHT);
 #endif
 
-    QFont smallfont;
-#ifdef Q_OS_MAC
-        smallfont.setPointSize(ROWHEIGHT);
-#else
-        smallfont.setPointSize(ROWHEIGHT*0.6f);
-#endif
 
     painter->setBrush(brush);
     QPainterPath path;