Show response headers

src-web/components/core/Banner.tsx

@@ -0,0 +1,21 @@
+import classnames from 'classnames';
+import type { ReactNode } from 'react';
+
+interface Props {
+  children: ReactNode;
+  className?: string;
+}
+export function Banner({ children, className }: Props) {
+  return (
+    <div>
+      <div
+        className={classnames(
+          className,
+          'border border-red-500 bg-red-300/10 text-red-800 px-3 py-2 rounded select-auto cursor-text',
+        )}
+      >
+        {children}
+      </div>
+    </div>
+  );
+}