Import the correct scss files for xmodule styling

common/lib/xmodule/xmodule/static_content.py

@@ -95,10 +95,14 @@ def _write_styles(selector, output_root, classes):
         for class_ in classes:
             css_imports[class_].add(fragment_name)
 
-    module_styles_lines = []
-    module_styles_lines.append("@import 'bourbon/bourbon';")
-    module_styles_lines.append("@import 'bourbon/addons/button';")
-    module_styles_lines.append("@import 'assets/anims';")
+    module_styles_lines = [
+        "@import 'bourbon/bourbon';",
+        "@import 'base/reset';",
+        "@import 'base/variables';",
+        "@import 'base/font_face';",
+        "@import 'base/mixins';",
+        "@import 'assets/anims';",
+    ]
     for class_, fragment_names in css_imports.items():
         module_styles_lines.append("""{selector}.xmodule_{class_} {{""".format(
             class_=class_, selector=selector