build: 支持 twin。

src/styles/global-styles.tsx

@@ -0,0 +1,19 @@
+import React from 'react';
+import { Global, css } from '@emotion/react';
+import tw, { theme, GlobalStyles as BaseStyles } from 'twin.macro';
+
+const customStyles = css({
+  body: {
+    WebkitTapHighlightColor: theme`colors.purple.500`,
+    ...tw`antialiased dark:bg-dark-800 bg-dark-100`,
+  },
+});
+
+const GlobalStyles = () => (
+  <>
+    <BaseStyles />
+    <Global styles={customStyles} />
+  </>
+);
+
+export default GlobalStyles;