fix: lower z-index of banneradv for improved stacking context

Author: medyo

src/features/adv/components/AdvBanner.css

@@ -10,7 +10,7 @@
   align-items: center;
   justify-content: center;
   max-width: 330px;
-  z-index: 100;
+  z-index: 1;
   margin: 0 auto;
 }
 .banneradv a {