Hello,

Actually, for the Sliders as you know the Slider Revolution plugin is used on the Site.

So, under the Slider editor module of the Slider Revolution, if the Slider Layout is selected as Full Width then it would appear like you have shared under the Screenshots, because that Full Width layout is taking the full width of the Container: https://ibb.co/7Yk7554

But if you want the Slider Image to appear Full irrespective of the Resolution, then you would need to select the Layout as Full Screen: https://ibb.co/tBbTjDy

Then it would appear in the way you want.

Also, remember to have the Background of the Slider Image as Cover: https://ibb.co/SsbjMBc

Hope this helps !

Best Regards