Add missing file

packages/web/components/elements/ShutdownBanner.tsx

@@ -0,0 +1,52 @@
+import { usePersistedState } from '../../lib/hooks/usePersistedState'
+import { CloseButton } from './CloseButton'
+import { HStack, SpanBox } from './LayoutPrimitives'
+
+export const ShutdownBanner = () => {
+  const [
+    showMaintenanceMode,
+    setShowMaintenanceMode,
+    isLoadingShowMaintenanceMode,
+  ] = usePersistedState({
+    key: 'show-shutdown-mode',
+    isSessionStorage: true,
+    initialValue: true,
+  })
+  return (
+    <>
+      {!isLoadingShowMaintenanceMode && showMaintenanceMode && (
+        <HStack
+          css={{
+            p: '5px',
+            top: 0,
+            left: 0,
+            width: '100vw',
+            position: 'absolute',
+            bg: '#FF5733',
+            color: '#FFFFFF',
+            zIndex: '100',
+            font: '$inter',
+            gap: '10px',
+          }}
+          alignment="start"
+          distribution="center"
+        >
+          Omnivore is shutting down on Nov. 30th.
+          <a
+            href="https://blog.omnivore.app/p/details-on-omnivore-shutting-down"
+            target="_blank"
+            rel="noreferrer"
+          >
+            Read More
+          </a>
+          <SpanBox css={{ width: '50px' }} />
+          <CloseButton
+            close={() => {
+              setShowMaintenanceMode(false)
+            }}
+          />
+        </HStack>
+      )}
+    </>
+  )
+}