You can display an attractive call to action in the header bar.

To enable it, go to Theme Customization -> Call to action and turn it on.
CALL TO ACTION SETTINGS
- Button text (Required)
 - URL (Required)
 - CSS Class (helps for CSS customization)
 - Element ID (ID to connect any external javascript if required)
 - Icon (optional)
 
To save the changes, click Publish.
                        
