You can access the style generator from the
Styles tab where you can customize the header colours, set header image, set status colours and more.
How to add custom style to your site?
Once you are done customizing the layout, enter the ID of business hours set which can be obtained from the shortcode in the
Style tab. For example
[business-hr id="12"] and then click on generate style.
Copy the entire content of the textarea box and paste it in your theme. you can also take a look at this: https://help.mywpdev.com/article/how-to-add-custom-css-to-wordpress/
Style generator was moved to a new location on Feb 2022, the link is updated on version
1.5.0. If you get error 404 when accessing the style generator, please update the latest version and link should be updated.