Fixed build process.

resources/bc_light.qss

@@ -7,6 +7,7 @@
 /* Text: #000000, #1f1f1f */
 /* Borders: #e1e1e1, #d1d1d1 */
 
+
 /* === QWidget Base === */
 QWidget {
     background-color: #f3f3f3;
@@ -250,3 +251,8 @@ QLineEdit:disabled {
     color: #a0a0a0;
     border: 1px solid #e1e1e1;
 }
+
+
+QSlider {
+    background: hotpink;
+}