feat: create content layout with emotion

inertia/components/common/external_link.tsx

@@ -0,0 +1,18 @@
+import { AnchorHTMLAttributes, CSSProperties, ReactNode } from 'react';
+
+export default function ExternalLink({
+  children,
+  title,
+  ...props
+}: AnchorHTMLAttributes<HTMLAnchorElement> & {
+  children: ReactNode;
+  style?: CSSProperties;
+  title?: string;
+  className?: string;
+}) {
+  return (
+    <a target="_blank" rel="noreferrer" title={title} {...props}>
+      {children}
+    </a>
+  );
+}