fix styled-components

src/pages/_document.tsx

@@ -28,7 +28,7 @@ class MyDocument extends Document {
       const initialProps = await Document.getInitialProps(ctx);
       return {
         ...initialProps,
-        styles: [initialProps.styles, <>{sheet.getStyleElement()}</>],
+        styles: [initialProps.styles, sheet.getStyleElement()],
       };
     } finally {
       sheet.seal();