This article explains how to select which post types can be edited with Elementor and how to disable its default color and font settings, allowing your site to use your theme's styles instead.
Customizing general settings
Post Types: Choose which post types can be built and edited using Elementor.
Disable Default Colors: Disable default Elementor settings for colors and use the colors of your current theme.
Disable Default Fonts: Disable default Elementor settings for font and use the fonts of your current theme.
Next up: Elementor Settings in WP: Advanced