Hello,
To adjust the line height in Elementor, please follow these steps:
For the Promo Banner Title:
Edit the page with Elementor > Edit the Promo Banner widget > Go to the Style tab → Open the Title settings > Enable Custom Typography, then configure the Line Height as needed
See this screenshot for a better understanding: https://ibb.co/Zz3VqbSr
For the Slide Title:
Edit the Section Title widget > Go to the Style tab → Open the Title settings > Enable Custom Typography, and adjust the Line Height accordingly
If you want to apply a global line height:
Go to Site Settings in Elementor (bottom left gear icon) > Navigate to Typography > Under Headings or Body, adjust the Line Height globally.https://ibb.co/9k6r4KxD
Best Regards,