this link show how you can style portals in material
https://mui.com/material-ui/guides/interoperability/#portals
but this is about tooltip I wanted to do it with modal or select , ...
and i tried this but didn't work I don't have any idea about popper in doc for tooltip.
const StyledSelect = styled<any>(({ className, ...props }: any) => (
<Select
{...props}
classes={{
popover: className,
}}
/>
))`
border: 10px solid red;
`;
it was my styledselect that I had used MenuProps then I had to pass className to MenuProps
It worked for me.