WB 2.11.0

It is not a good idea to change a theme, just to hide the fact that modules do not meet the guidelines that have been in effect for over 10 years.
It makes much more sense to rework the CSS of the problem modules.

Hello World - Project written by Christian Sommer in 2007

 # NOTE:
 # All CSS styles, classes... have to stick to the following naming conventions:
 # mod_MODULE_DIRECTORY_XXXX_f

 # mod: shows that the CSS style is defined within a module
 # MODULE_DIRECTORY: unique identifier to prevent that CSS styles are overwritten by other modules
 # XXXX: your CSS style definition (e.g. emphasise, warning...)
 # f: identifier for the frontend