diff --git a/12/style.css b/12/style.css
index c75d5f7..4e6c6ea 100644
--- a/12/style.css
+++ b/12/style.css
@@ -624,4 +624,8 @@ cursor:pointer;
 .link_05:hover {
 color: fuchsia;
 cursor:pointer;
+}
+
+.link_05 > img:hover {
+filter: invert(1);
 }
\ No newline at end of file