Notes to Micah

You can see all the code I added to get the slider below sliding here:
https://christen-gallneukirchen.at/wp-admin/post.php?post=221&action=edit

I just used the second example, from this page, but there are a lot of options for tweaking it:
https://kenwheeler.github.io/slick/

I highly recommend using this chrome extension to experiment and learn CSS:
https://chrome.google.com/webstore/detail/user-css/okpjlejfhacmgjkmknjhadmkdbcldfcb?hl=en
Just remember the changes you make with it are only visible to you. You have to cut and paste it into the theme customizer or whatever, to actually apply the styling to the site.