diff --git a/common/lib/xmodule/xmodule/css/capa/display.scss b/common/lib/xmodule/xmodule/css/capa/display.scss
index bceb63c8dc..8fba6a47f5 100644
--- a/common/lib/xmodule/xmodule/css/capa/display.scss
+++ b/common/lib/xmodule/xmodule/css/capa/display.scss
@@ -968,7 +968,7 @@ div.problem .action {
     }
     .submit {
       @include margin-right($baseline / 2);
-      float: left;
+      @include float(left);
     }
   }