Stylesheets: Breeze: misc fixes

src/ui/BreezeStyleSheets/dark.qss

@@ -57,13 +57,13 @@ QWidget
     outline: 0;
 }
 
-QWidget:item:hover
+QWidget::item:hover
 {
     background-color: #3daee9;
     color: #eff0f1;
 }
 
-QWidget:item:selected
+QWidget::item:selected
 {
     background-color: #3daee9;
 }
@@ -525,7 +525,7 @@ QTextEdit
 
 QPlainTextEdit
 {
-    background-color: #232629;;
+    background-color: #232629;
     color: #eff0f1;
     border-radius: 0.2ex;
     border: 0.1ex solid #76797c;

src/ui/BreezeStyleSheets/light.qss

@@ -54,13 +54,13 @@ QWidget
     outline: 0;
 }
 
-QWidget:item:hover
+QWidget::item:hover
 {
     background-color: #33A4DF;
     color: #31363B;
 }
 
-QWidget:item:selected
+QWidget::item:selected
 {
     background-color: #33A4DF;
 }
@@ -567,7 +567,7 @@ QMainWindow::separator:hover
     color: white;
     padding-left: 0.4ex;
     border: 0.1ex solid #BAB9B8;
-    spacing: 0.2x;
+    spacing: 0.2ex;
 }
 
 QMenu::separator
@@ -1659,12 +1659,14 @@ QPushButton:flat {
     border: none;
 }
 
-QScrollBar::handle:vertical
+QScrollBar::handle:vertical,
+QScrollBar::handle:horizontal
 {
     background-color: #BAB9B8;
 }
 
-QScrollBar:vertical
+QScrollBar:vertical,
+QScrollBar:horizontal
 {
     background-color: #eff0f1;
     border: 0.1ex transparent #eff0f1;