[SOLVED] Underline disappears after copying a module

I used the contact module from the sample data to make an own contact. That works perfectly.
As soon as the module is copied the underline disappears. What went wrong or how can I fix that?

beta.erl-gmbh.de/index.php/service/verschleissteile

Setup the copied module to the same style / class like the other module
www.joomlaplates.com/support/documentation/warp-7-modules

Problem solved.