How do I take the CSS animation we learn for svg and apply it to adobe illustrator graphics?

I am trying to animate a logo to test out the skills I learned on the animating svg with css courses. The problem is when I convert adobe illustrator files over into svg, I am having trouble. The svg for file looks like this

  <svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 2294.06 900.63"><defs><title>Hartenst_LC_0923_3U copy</title>
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When I try to separate the styling onto a different stylesheet, it does not work. Is there a way for me to do css animation inline? Or does anyone know how to separate the CSS without breaking it?