diff --git a/kemonogen/index.html b/kemonogen/index.html
index 6fb51ac..14a2ebe 100644
--- a/kemonogen/index.html
+++ b/kemonogen/index.html
@@ -35,7 +35,7 @@
                 box-sizing: border-box;
                 position: relative;
                 overflow: hidden;
-                background-image: url("background.jpg");
+                background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url("background.jpg");
                 background-size: cover;
                 background-position: center;
                 background-attachment: fixed;