new react-openapi

src/Home.tsx

@@ -236,7 +236,7 @@ export default function Home() {
 
         <Grid container spacing={3}>
           {features.map((f) => (
-            <Grid key={f.title} size={{ xs: 12, sm: 6, md: 3 }}>
+            <Grid key={f.title} item xs={12} sm={6} md={3}>
               <FeatureCard {...f} />
             </Grid>
           ))}