[plugin pdf-embedder] Remove Toolbar when hovering

I’m using the pdf embedder plugin and want to remove the default toolbar that pops up when hovering over the canvas. I’ve tried doing so in the css but no luck. Any help is greatly appreciated.

http://184.154.151.66/~coconcepts/our-objectives-values-culture/

https://ww.wp.xz.cn/plugins/pdf-embedder/