diff --git a/templates/cover.html b/templates/cover.html
index 6299182..a1a3e92 100644
--- a/templates/cover.html
+++ b/templates/cover.html
@@ -195,7 +195,9 @@
     /* Optional back cover artwork */
     .back-artwork {
       position: absolute;
-      inset: 0;
+      top: 0; left: 0;
+      width: 100%;
+      height: 100%;
       object-fit: cover;
       opacity: 0.35;
     }