I came across this code snippet in the Material UI documentation:
<FormControl
sx={{
"& > :not(style)": { m: 1 },
maxWidth: "100%",
minWidth: "100%",
}}
>
It appears that &
is not a standard part of CSS.
In the Material UI documentation, it states that the sx
prop allows for using a CSS-superset. What specific CSS-dialect is being used here?