Context
In my React project, I am utilizing the styled() utility function provided by Material UI to apply styles to my components. The issue arises when trying to style an imported component that has already been styled with this utility function. Despite defining new styles in the parent component, the styling from the base component remains unchanged. Here is an example to illustrate this:
import { styled } from "@mui/material";
function App() {
const StyledChild = styled(Child)(({ theme }) => {
console.log("called from App");
return {
backgroundColor: "black"
};
});
return <StyledChild />;
}
function Child() {
const Div = styled("div")(({ theme }) => {
console.log("called from Child");
return {
backgroundColor: "red"
};
});
return <Div>hello world</Div>;
}
export default App;
The console output shows:
called from App
called from Child
Problem Statement
Despite attempting to style the imported component in the parent component, as demonstrated in the codesandbox example, only the original base styling of backgroundColor: 'red' is retained. The newly defined styling of backgroundColor: 'black' does not override it, even though the console logs indicate otherwise.
Inquiry
- How can a component that has already been styled be effectively restyled?
- Why does the solution provided above fail to work as expected? Shouldn't the use of the styled() utility function result in the applied styling as defined in the returned object?
Update
After further investigation, it seems that even removing the initial style of Child does not allow the parent-level styling to take effect.
import { styled } from "@mui/material";
function App() {
const StyledChild = styled(Child)(({ theme }) => {
console.log("called from App");
return {
backgroundColor: "black"
};
});
return <StyledChild />;
}
function Child() {
return <div>hello world</div>;
}
export default App;
Even without the inclusion of backgroundColor: "black" at the parent level, the styling does not change, leading to a revised question title - How can styling be applied to a child component at the parent level?