Hi there,
That’s something Elementor adds.
Here’s the CSS that adds it in.
body.elementor-page-1284:not(.elementor-motion-effects-element-type-background), body.elementor-page-1284 > .elementor-motion-effects-container > .elementor-motion-effects-layer {
background-color: #F7F7F8;
}
This is something out of the theme’s control as it’s coming from Elementor. It’s best to ask their support on how to change this. (If I remember it right, it’s within the Page settings > Style > Body Style. But I’m not sure)