Keycloak's pages are on another origin; a mancala_theme cookie reaches them on localhost's ports and, set for playmancala.app, on its auth subdomain.
Messages appear at the top centre below the header as an inverted chip of the theme, in the app's font and without icons, and close on a click instead of sliding in at the bottom right in Notyf's red.
The login pages in the app's three themes, chosen through a cookie, and the web app's messages in the theme's colors at the top centre.
