example using ct-autolayout and aside

packages/patterns/aside.tsx

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+/// <cts-enable />
+import {
+  Cell,
+  cell,
+  Default,
+  derive,
+  h,
+  handler,
+  ifElse,
+  lift,
+  NAME,
+  navigateTo,
+  recipe,
+  toSchema,
+  UI,
+} from "commontools";
+
+// note: you may need to zoom in our out in the browser to see the
+// content and/or tabs
+export default recipe(
+  "Aside",
+  () => {
+    return {
+      [NAME]: "Aside",
+      [UI]: (
+        // ct-screen provides a full-height layout with header/main/footer areas
+        <ct-screen>
+          {/* Header slot - fixed at top */}
+          <div slot="header">
+            <h2>Header Section</h2>
+          </div>
+
+          {/* ct-autolayout creates responsive multi-panel layout with optional sidebars */}
+          {/* tabNames: Labels for main content panels (shown as tabs on mobile) */}
+          {/* Shows all panels side-by-side in a grid */}
+          <ct-autolayout tabNames={["Main", "Second"]}>
+            {/* Left sidebar - use slot="left" */}
+            <aside slot="left">
+              <h3>Left Sidebar</h3>
+              <p>Left content</p>
+              <ct-button>Left Button</ct-button>
+            </aside>
+
+            {/* Main content panels - no slot attribute needed */}
+            {/* Number of divs should match number of tabNames */}
+            <div>
+              <h1>Main Content Area</h1>
+              <p>This is the main content with sidebars</p>
+              <ct-button>Main Button</ct-button>
+            </div>
+
+            <div>
+              <h1>Second Content Area</h1>
+              <p>This is the second content with sidebars</p>
+              <ct-button>Second Button</ct-button>
+            </div>
+
+            {/* Right sidebar - use slot="right" */}
+            <aside slot="right">
+              <h3>Right Sidebar</h3>
+              <p>Right content</p>
+              <ct-button>Right Button</ct-button>
+            </aside>
+          </ct-autolayout>
+
+          {/* Footer slot - fixed at bottom */}
+          <div slot="footer">
+            <p>Footer Section</p>
+          </div>
+        </ct-screen>
+      ),
+    };
+  },
+);