diff --git a/docs/_static/zmstyle.css b/docs/_static/zmstyle.css
new file mode 100644
index 000000000..b8f0235f3
--- /dev/null
+++ b/docs/_static/zmstyle.css
@@ -0,0 +1,3 @@
+img {
+	border: 1px solid black !important;
+ }