Shadcn Expandable Feature Block Twenty One

Block Twenty One is built around inline feature triggers, not a separate tab bar. The hero sentence contains two clickable phrases, LLMs and Personal Agents, and those words control the active content below.

How the section is built

The custom InlineFeatureTrigger component applies gradient text, a glowing icon tile, and active data attributes. Beneath the headline, the source renders active title, description, CTA, supportive content, illustration, and background image in a two-column layout.

Interaction model

The component autoplays every seven seconds and resets when a visitor clicks either inline trigger. This pattern is strong for editorial SaaS/product pages where the headline itself should teach the interaction.

Best fit

Use this React and Tailwind CSS block when your Next.js landing page needs progressive disclosure inside the feature section. It keeps the visitor on the same surface while still giving each product capability its own active state, illustration, and supporting copy.

Customization notes

Because the trigger text is embedded in a sentence, keep labels short. Long feature names will break the rhythm on mobile and may crowd the icon tile.

Keep the shadcn UI block conventions intact when you adapt it: short trigger labels, real product copy, accurate media alt text, and enough responsive testing to confirm the expanded state still feels intentional on mobile and desktop.

Related Shadcn UI blocks

• Expandable Features Blocks

Start from Tailark

Preview Shadcn Expandable Feature Block Twenty One