WunderWP is a free plugin available in the WordPress directory. The addon provides style presets for Elementor widgets (both free and Pro) so that you don’t have to style them yourself or you can use the style presets as a starting point and modify them.
You can setup a free account on their website and doing so gives you several additional features. You can save your own widget styles to the cloud and reuse them on other pages and other sites. You also have access to a large number of predesigned template sections for Elementor free and Pro. The Pro sections are ones that use widgets from Elementor Pro. You can also save your own templates to the WunderWP cloud for reuse on other pages and sites.