diff --git a/safari.css b/safari.css
new file mode 100644
index 0000000..550ca84
--- /dev/null
+++ b/safari.css
@@ -0,0 +1,13 @@
+/*
+ * Force tab width of 4 spaces
+ */
+.tab-size[data-tab-size='2'],
+.tab-size[data-tab-size='4'],
+.tab-size[data-tab-size='8'],
+.inline-review-comment,
+.gist table.lines,
+table.diff-table,
+.markdown-body pre,
+body > pre {
+    tab-size: 4 !important;
+}