diff --git a/.gitignore b/.gitignore
index ee683405..01babc3f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,6 @@ todo.txt
 
 # Test output file
 _SpecRunner.html
+
+.DS_Store
+test/.DS_Store
diff --git a/dist/PublicLab.Editor.css b/dist/PublicLab.Editor.css
index 9cda7552..f9b05238 100644
--- a/dist/PublicLab.Editor.css
+++ b/dist/PublicLab.Editor.css
@@ -168,6 +168,7 @@ pre {
 .ple-module {
   padding: 20px;
   border-top: 1px solid #ddd;
+  display: flex;
 }
 
 .ple-module-guide h2 {