Yes, you can add a custom header and footer (HTML enabled) in the 'Contact us' page:
- Head to FAQ+Contact us+WhatsApp+Track app under Apps section in your Shopify store.
- Find the 'Contact us' section and click on 'Form options'.
- Click 'Advance Options'>Custom Header or Footer Note: You may convert your text into HTML using this online HTML editor
- Click on 'Save'.