UI: Fix dark theme border consistency issue

Fixes an issue where the border color/style would not be consistent
across different operating systems

obs/data/themes/Dark.qss

@@ -37,6 +37,10 @@ QWidget {
     selection-color: black;
 }
 
+* [frameShape="1"], * [frameShape="2"], * [frameShape="3"], * [frameShape="4"], * [frameShape="5"], * [frameShape="5"] {
+    border: 1px solid rgb(31,30,31);
+}
+
 
 /* Misc */
 
@@ -455,3 +459,10 @@ VolumeMeter {
     qproperty-peakColor:;
     qproperty-peakHoldColor: rgb(225,224,225); /* veryLight */
 }
+
+
+/* Status Bar */
+
+QStatusBar::item {
+    border: none;
+}