{/* For variant="text", adjust the height via font-size */}
<Skeleton variant="text" sx={{ fontSize: '1rem' }} />

{/* For other variants, adjust the size with `width` and `height` */}
<Skeleton variant="circular" width={40} height={40} />
<Skeleton variant="rectangular" width={210} height={60} />
<Skeleton variant="rounded" width={210} height={60} />