Foreground - Background - Scaling

[howi42]

A few questions :

• is there a way to define who is on top when modules overlap ?
  For some modules the output is nicely scalable, for example MMM-NASA.
  Others seem to ignore any attempt to reduce or increase the size, they probably
  do not use the custom.css at all. The original weather module ( and their derivates )
  are a good example.
  Does the Magic Mirror expect a minimum display size ( in pixel ) ?
  Thanks

[strawberry 3.141]

@howi42 you can use z-index in custom.css to choose the stack level of elements