diff --git a/src/dev/index.html b/src/dev/index.html
index 6adba2c..78cba86 100644
--- a/src/dev/index.html
+++ b/src/dev/index.html
@@ -11,13 +11,12 @@
       display: flex;
       align-items: center;
       justify-content: center;
+      background-color: #2a2a2a;
       background-image:
-        linear-gradient(45deg, #3a3a3a 25%, transparent 25%),
-        linear-gradient(-45deg, #3a3a3a 25%, transparent 25%),
-        linear-gradient(45deg, transparent 75%, #3a3a3a 75%),
-        linear-gradient(-45deg, transparent 75%, #3a3a3a 75%);
+        linear-gradient(45deg, #3a3a3a 25%, transparent 25%, transparent 75%, #3a3a3a 75%),
+        linear-gradient(45deg, #3a3a3a 25%, transparent 25%, transparent 75%, #3a3a3a 75%);
       background-size: 16px 16px;
-      background-position: 0 0, 0 8px, 8px -8px, -8px 0;
+      background-position: 0 0, 8px 8px;
       border-radius: var(--pico-border-radius);
     }
     .preview-area > div { image-rendering: pixelated; }