The function have a dedicated website, you can check it and know all about the function:Visit WSHK templates website now!
In the following video you can watch how do it:
All the styles are normally on the first section of each page.
To customize it, just need go to the section advanced tab and look for Custom CSS, click on it and you will see all the styles.
You can change it how you want, can remove part or all the styles to configure it by yourself.
The styles has been added only to keep the template styles.
The templates has been developed to be used with GeneratePress theme and Elementor builder.
Is very recommend to use with these ressources.
If you try it with other theme maybe the template will not display all correctly.
Woo Shortcodes Kit
Woo Shortcodes Kit PRO
Elementor PRO (recommend for a better compatibility)