Reviewing CSS Grid by drawing a Go board

This morning's task at work was centering a set of split buttons, and to do that I had no choice but to use grid.
I hadn't used grid in a while, so it wasn't easy, and I drew a Go board to review it once more.
The code for the Go board is below.
jsx
import { styled } from "styled-components";
function App() {
return (
<GridBody>
<div>·</div>
<div></div>
<div></div>
<div></div>
<div>·</div>
<div></div>
<div></div>
<div></div>
<div>·</div>
</GridBody>
);
}
export default App;
const GridBody = styled.div`
width: 50%;
height: 70vh;
border: 1px solid black;
display: grid;
grid-template-columns: repeat(3, 1fr);
grid-template-rows: repeat(3, 1fr);
> div {
border: 1px solid black;
display: flex;
justify-content: center;
align-items: center;
font-size: 10rem;
}
`;- #CSS Grid
- #Go board
- #review