fix: render homepage background above page canvas

assets/css/compiled/main.css

@@ -345,6 +345,9 @@
   .-z-10 {
     z-index: calc(10 * -1);
   }
+  .z-0 {
+    z-index: 0;
+  }
   .z-2 {
     z-index: 2;
   }