change height of footer

Dear team! first of all - great themes! I would like to test how my site is currently received and will then switch to Pro for sure. In the meantime, however, there is a problem for which I ask for solution. I would like to change the height of the footer - I have two widgets and the footer is way too big for me. How can I solve the problem? URL: www.zurfreundlichenerinnerung.at