diff --git a/src/Header/index.tsx b/src/Header/index.tsx
index 6e0c850..d608d03 100644
--- a/src/Header/index.tsx
+++ b/src/Header/index.tsx
@@ -5,20 +5,24 @@ import React from "react";
 
 export interface HeaderProps {
   logo?: React.ReactNode;
-  elements?: React.ReactNode[];
+  elements?: React.ReactElement[];
 }
 
 const Header: FC<HeaderProps> = ({ logo, elements = [] }) => {
   return (
-    <header className="header" role="banner">
+    <div className="header">
       <div className="header__container">
         {!!logo && <div className="header__logo">{logo}</div>}
 
         {elements.length > 0 && (
-          <div className="header__elements">{elements}</div>
+          <div className="header__elements">
+            {elements.map((node, idx) => (
+              <div key={node.key ?? idx}>{node}</div>
+            ))}
+          </div>
         )}
       </div>
-    </header>
+    </div>
   );
 };
 
diff --git a/src/Navigation/Navigation.stories.tsx b/src/Navigation/Navigation.stories.tsx
new file mode 100644
index 0000000..5f17e64
--- /dev/null
+++ b/src/Navigation/Navigation.stories.tsx
@@ -0,0 +1,116 @@
+import type { Meta, StoryObj } from "@storybook/react-vite";
+
+import Navigation from ".";
+import { Placeholder } from "../Placeholder";
+import Header from "../Header";
+import ColorSchemeToggle from "../ColorSchemeToggle";
+import DetSysIcon from "../DetSysIcon";
+
+const meta = {
+  title: "Molecules/Navigation",
+  component: Navigation,
+  argTypes: {
+    initialState: {
+      options: ["open", "closed"],
+    },
+    elements: { type: "function" },
+  },
+} satisfies Meta<typeof Navigation>;
+
+export default meta;
+type Story = StoryObj<typeof meta>;
+
+export const Default: Story = {
+  args: {
+    initialState: undefined,
+    elements: [
+      <Placeholder key="primary" height="100%" label="Primary Element" />,
+      <Placeholder key="nav" height="100%" label="Navigation Link" />,
+    ],
+  },
+  render: (props) => (
+    <div
+      style={{
+        height: "300px",
+        width: "500px",
+        border: "1px solid black",
+        display: "flex",
+        justifyContent: "end",
+      }}
+    >
+      <Navigation {...props} />
+    </div>
+  ),
+};
+
+export const InHeader: Story = {
+  args: {
+    initialState: undefined,
+    elements: [
+      <Placeholder key="lorem" height="100%" label="Lorem" />,
+      <Placeholder key="ipsum" height="100%" label="Ipsum" />,
+    ],
+  },
+  render: (props) => (
+    <Header
+      logo={<DetSysIcon size="base" />}
+      elements={[
+        <ColorSchemeToggle key="color-scheme-toggle" />,
+        <Navigation key="nav" {...props} />,
+      ]}
+    />
+  ),
+};
+
+export const DefaultOpen: Story = {
+  args: {
+    initialState: "open",
+    elements: [
+      <Placeholder key="lorem" height="100%" label="Lorem" />,
+      <Placeholder key="ipsum" height="100%" label="Ipsum" />,
+    ],
+  },
+  render: (props) => (
+    <>
+      <div
+        style={{
+          height: "300px",
+          width: "500px",
+          border: "1px solid black",
+          display: "flex",
+          justifyContent: "end",
+        }}
+      >
+        <Navigation {...props} />
+      </div>
+    </>
+  ),
+};
+
+export const InHeaderOpen: Story = {
+  args: {
+    initialState: "open",
+    elements: [
+      <a key="docs" href="#">
+        Docs
+      </a>,
+      <a key="flakes" href="#">
+        Flakes
+      </a>,
+      <a key="orgs" href="#">
+        Orgs
+      </a>,
+      <Placeholder key="lorem" height="100%" label="Lorem" />,
+      <Placeholder key="ipsum" height="100%" label="Ipsum" />,
+    ],
+  },
+  render: (props) => (
+    <Header
+      logo={<DetSysIcon size="base" />}
+      elements={[
+        <ColorSchemeToggle key="color-scheme-toggle" />,
+        <Navigation key="nav" {...props} />,
+      ]}
+    />
+  ),
+};
diff --git a/src/Navigation/index.scss b/src/Navigation/index.scss
new file mode 100644
index 0000000..6f6f870
--- /dev/null
+++ b/src/Navigation/index.scss
@@ -0,0 +1,75 @@
+@use "sass:map";
+
+@use "../sass/mixins";
+@use "../sass/tokens";
+@use "../sass/functions";
+
+@media screen and (width >= 1024px) {
+  .navigation {
+    height: 24px; // Matches the svg-icon height used by the expander in closed mode
+    padding: 4px; // Matches the svg-icon height used by the expander in closed mode
+    .navigation__expand {
+      display: none;
+    }
+
+    .navigation__elements {
+      height: 24px;
+      display: flex;
+      flex-direction: row;
+      align-items: center;
+      gap: 1em;
+    }
+  }
+}
+
+@media screen and (width < 1024px) {
+  .navigation {
+    position: relative;
+
+    .navigation__expand {
+      @include mixins.svg-button;
+    }
+
+    .navigation__elements {
+      display: flex;
+      flex-direction: column;
+      gap: map.get(tokens.$spacing, sm);
+
+      max-width: 100vw;
+
+      position: absolute;
+      transform-origin: 100% 0;
+      z-index: 10;
+      right: 0;
+      top: calc(100% + #{map.get(tokens.$spacing, xs)});
+
+      @include mixins.pad(base);
+      border-radius: map.get(tokens.$border-radius, base);
+
+      background-color: map.get(tokens.$brand, very-black);
+      $offset: map.get(tokens.$spacing, xs);
+      border-style: solid;
+      border-width: 1px;
+      border-color: map.get(tokens.$brand, black);
+      @include mixins.light-mode {
+        border: none;
+        background-color: map.get(tokens.$brand, white);
+        box-shadow:
+          $offset $offset $offset 0px map.get(tokens.$brand, light),
+          -$offset $offset $offset 0px map.get(tokens.$brand, light);
+      }
+    }
+
+    .navigation__element {
+      width: min(320px, 100vw);
+
+      @media screen and (width < 650px) {
+        width: 268px;
+      }
+    }
+  }
+
+  .navigation--closed .navigation__elements {
+    display: none;
+  }
+}
diff --git a/src/Navigation/index.tsx b/src/Navigation/index.tsx
new file mode 100644
index 0000000..b9111a8
--- /dev/null
+++ b/src/Navigation/index.tsx
@@ -0,0 +1,57 @@
+import { useId, useState, type FC } from "react";
+
+import "./index.scss";
+import React from "react";
+import clsx from "clsx";
+import { Bars3Icon } from "@heroicons/react/24/outline";
+
+export interface NavigationProps {
+  initialState?: "open" | "closed";
+  elements: React.ReactElement[];
+}
+
+const Navigation: FC<NavigationProps> = ({
+  elements,
+  initialState = "closed",
+}) => {
+  const navigationId = useId();
+
+  const [menuState, setMenuState] = useState<boolean>(initialState === "open");
+
+  const toggleNavigation = () => {
+    setMenuState((prev) => !prev);
+  };
+
+  return (
+    <nav
+      className={clsx(
+        "navigation",
+        menuState ? "navigation--open" : "navigation--closed",
+      )}
+    >
+      <button
+        type="button"
+        className="navigation__expand"
+        aria-label={menuState ? "Close navigation" : "Open navigation"}
+        aria-expanded={menuState}
+        aria-controls={navigationId}
+        onClick={toggleNavigation}
+      >
+        <Bars3Icon aria-hidden="true" focusable="false" />
+      </button>
+      <div
+        id={navigationId}
+        aria-hidden={!menuState}
+        className="navigation__elements"
+      >
+        {elements.map((child, idx) => (
+          <div key={child.key ?? idx} className="navigation__element">
+            {child}
+          </div>
+        ))}
+      </div>
+    </nav>
+  );
+};
+
+export default Navigation;
diff --git a/src/PageLayout/PageLayout.stories.tsx b/src/PageLayout/PageLayout.stories.tsx
index cd17b03..9fff7e9 100644
--- a/src/PageLayout/PageLayout.stories.tsx
+++ b/src/PageLayout/PageLayout.stories.tsx
@@ -2,6 +2,10 @@ import type { Meta, StoryObj } from "@storybook/react-vite";
 
 import PageLayout from ".";
 import { Placeholder } from "../Placeholder";
+import Header from "../Header";
+import DetSysIcon from "../DetSysIcon";
+import ColorSchemeToggle from "../ColorSchemeToggle";
+import Navigation from "../Navigation";
 
 const meta = {
   title: "Template/PageLayout",
@@ -33,3 +37,39 @@ export const Default: Story = {
     content: <Placeholder height="15em" label="Content" />,
   },
 };
+
+export const FleshedOut: Story = {
+  args: {
+    header: (
+      <Header
+        logo={
+          <>
+            <DetSysIcon size="base" />
+            <h1 style={{ margin: 0 }}>DetSys</h1>
+          </>
+        }
+        elements={[
+          <ColorSchemeToggle key="color-scheme-toggle" />,
+          <Navigation
+            key="nav"
+            elements={[
+              <a key="docs" href="#">
+                Docs
+              </a>,
+              <a key="flakes" href="#">
+                Flakes
+              </a>,
+              <a key="orgs" href="#">
+                Orgs
+              </a>,
+              <Placeholder key="lorem" height="100%" label="Lorem" />,
+              <Placeholder key="ipsum" height="100%" label="Ipsum" />,
+            ]}
+          />,
+        ]}
+      />
+    ),
+    content: <div style={{ height: "100em" }} />,
+    panes: [<Placeholder height="3em" label="Pane 1" />],
+  },
+};
diff --git a/src/PageLayout/index.tsx b/src/PageLayout/index.tsx
index 897d72d..e7c4f0c 100644
--- a/src/PageLayout/index.tsx
+++ b/src/PageLayout/index.tsx
@@ -23,7 +23,13 @@ const PageLayout: FC<PageLayoutProps> = ({
       {!!header && <header>{header}</header>}
       <main>
         <div className="page-layout__content">{content}</div>
-        {panes.length > 0 && <div className="page-layout__panes">{panes}</div>}
+        {panes.length > 0 && (
+          <div className="page-layout__panes">
+            {panes.map((pane, idx) => (
+              <div key={pane.key ?? idx}>{pane}</div>
+            ))}
+          </div>
+        )}
       </main>
       {!!footer && <footer>{footer}</footer>}
     </div>
diff --git a/src/index.ts b/src/index.ts
index 5b7b1ec..53e1379 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -76,3 +76,5 @@ export {
 } from "./LabeledTextInput";
 
 export { type PageLayoutProps, default as PageLayout } from "./PageLayout";
+
+export { type NavigationProps, default as Navigation } from "./Navigation";
diff --git a/src/sass/_mixins.scss b/src/sass/_mixins.scss
index 589ad17..ff583a8 100644
--- a/src/sass/_mixins.scss
+++ b/src/sass/_mixins.scss
@@ -28,6 +28,17 @@
   }
 }
 
+@mixin border($size) {
+  border-width: 1px;
+  border-style: solid;
+  border-radius: map.get(tokens.$border-radius, $size);
+
+  border-color: map.get(tokens.$border-color, dark);
+  @include light-mode {
+    border-color: map.get(tokens.$border-color, light);
+  }
+}
+
 @mixin transition($property, $duration) {
   transition-property: $property;
   transition-duration: map.get(tokens.$duration, $duration);