HwKeeper
In the map preview, the Dungeon preview spoils all buildings and castles, and spoils the enemy's location. Maybe just make a landscape page without that, if possible.
Also, black text is completely unreadable on any site theme. For example, in this post https://heroesworld.ru/post/121327897/
Not displaying objects is easier than displaying them.
I updated the preview generation — now it's landscape only.
Regarding the text, the author explicitly specified black color and it displays as black; if no color is specified, then the system adjusts it to the selected themes and mode.
Apparently, the author uses light mode, where everything is visible.
The text in the example, which is explicitly set to white, displays as white and is clearly visible in dark mode, but not visible in light mode (the reverse situation).
Automatically modifying colors that the author specifies when creating a message seems incorrect to me, but I added an optional system color correction function (the last checkbox).
Enabling that checkbox is exactly what resolves such situations.