(Fix) banners layout, update notifications behavior,

and update Dockerfile

(fix) - Adjusted banner sizes
(fix) - Notifications no longer show on mobile if already read
(feat) - Updated Dockerfile for proper build and deployment

nginx.conf

@@ -0,0 +1,9 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}