you could take that code and create
a whole separate webpage for just the memes
--cut the header and footer from the index page and paste it in, that will load the CSS
then ON THE INDEX PAGE POINT THE "memes" LINK TO THIS NEW MEMES page and also add a back button to the main index.

LOOKUP owl-carousel
they may have code to just load
whatever images are in the memes directory wirhour having to code for each one

or find code for a better carosel/slideshow

also a google for animated gifs and you can change up ANY of the thumbs for the various sections