feat: enhance ad container styles

Added new styles for the ad container to improve layout and appearance.
- Set overflow to hidden
- Defined width and max-width as 100%
- Added background color and border radius for ads

resources/css/app.css

@@ -153,3 +153,14 @@
 ins.adsbygoogle[data-ad-status="unfilled"] {
     display: none !important;
 }
+
+.ad-container {
+    overflow: hidden;
+    width: 100%;
+    max-width: 100%;
+}
+
+.ad-container ins.adsbygoogle {
+    background-color: rgba(0, 0, 0, 0.02);
+    border-radius: 4px;
+}