♿️ Add focus color change in settings menu

src/views/SettingsView.vue

@@ -82,13 +82,18 @@ select {
   border: 2px solid var(--element-border-input);
   border-radius: 5px;
   background-color: var(--element-color);
-  transition: background-color 0.2s;
+  transition: 0.2s;
+  transition-property: background-color border-color;
 }
 
 select:hover {
   background-color: var(--element-color-hover);
 }
 
+select:focus {
+  border-color: var(--element-border-focus);
+}
+
 select[multiple] {
   min-width: 90px;
 }