You can apply a different style to the first letter of a paragraph in Text Editor widget which called Drop Cap.
In order to apply a Drop Cap to your paragraph:
1. In Elementor, drag and drop a Text Editor widget into your layout so that a new panel will open on the left side of the Elementor with the element specific settings.
2. From the Content tab, insert your paragraph and enable the Drop Cap switch button.
3. A new options panel will emerge in the Style tab where you can customize the drop cap's style.
4. Apply your desired style and Update the page.