gui: Decrease padding on the panel and modal bodies (#6153)

This allows better viewing when on a condensed screen, and reduces screen real estate slightly.

gui/default/assets/css/overrides.css

@@ -246,6 +246,18 @@ a.toggler:hover {
     text-decoration: none;
 }
 
+/**
+ * Panel and Modal body padding decrease
+ */
+
+.panel-collapse .panel-body {
+    padding: 0;
+}
+
+.modal-body {
+    padding: 5px;
+}
+
 /**
  * Progress bars with centered text
  */
@@ -400,4 +412,4 @@ ul.three-columns li, ul.two-columns li {
     .btn:not(.panel-heading) + .btn:not(.panel-heading) {
         margin-bottom: 1rem;
     }
-}
+}