The minimap will always show throughout your whole game. You can position it on the screen with the CSS above.
To control the minimap location, insert the following at the bottom of each passage:
<<map x-coord y-coord>>
This works on pixel size, and the coordinates also depend on the size of your minimap window. For example, the map I'm using in my story is 1000x1000. My minimap window is 200 x 200. In order to link the absolute center of the map I subtract 100px from each coordinate for <<map -400 -400>> (negative values because the top left corner of the map image is 0,0).