diff --git a/scripts/tracker.css b/scripts/tracker.css
index 4dce391..f46e0bf 100644
--- a/scripts/tracker.css
+++ b/scripts/tracker.css
@@ -42,8 +42,8 @@ html, body {
     border: 1px solid #555;
     box-shadow: inset 0 0 0 1px #111, inset 0 0 2px 1px #444, 0 0 2px 2px #000;
     background: #181818;
-    background: repeating-linear-gradient(to right, rgba(255, 255, 255, .05), rgba(0, 0, 0, .08) 2px),
-                repeating-linear-gradient(to bottom, #222, #111 2px);
+    background: repeating-linear-gradient(to right, rgba(255, 255, 255, .05), rgba(0, 0, 0, .08) 2px) center center / 2px 100%,
+                repeating-linear-gradient(to bottom, #222, #111 2px) center center / 100% 2px;
     background-blend-mode: overlay;
     will-change: transform;
 }