diff --git a/.DS_Store b/.DS_Store
deleted file mode 100644
index be1185b..0000000
Binary files a/.DS_Store and /dev/null differ
diff --git a/.gitignore b/.gitignore
index eea356a..c655159 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/**/.DS_Store
 ## Core latex/pdflatex auxiliary files:
 *.aux
 *.lof
diff --git a/GA4/ga4.pdf b/GA4/ga4.pdf
index 3515f79..890f77e 100644
Binary files a/GA4/ga4.pdf and b/GA4/ga4.pdf differ