Slider is coming up Float:left?

Something very odd is happening. When I insert “Fullwidth Slider” the image is displayed all the far to the far right and off the screen. I looked into the css and it shows: element.style{float:left;} not sure why? and how to reset it besides adding a custome css.
If I replace the “Fullwidth Slider” with any of the other options: Flex slider, Thumb slider, Carousel slider…. it comes up centered.

Huhh!?!!

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