footer image broken on main

I'm testing some changes locally with an unrelated feature the slides I am testing with have an image in the footer like in [the footer example](https://github.com/mfontanini/presenterm/blob/master/examples/footer.md?plain=1). the image is correctly placed and sized with 0.15.1 however, with a fresh build of main, the image is not downsized and is all over the place moving around with `<!-- pause -->` I haven't been able to track it down to a single commit yet.