Ultra Theme by Themify is a powerful and flexible WordPress theme. Making it easy to create any site quickly and beautifully (and responsive, of course). Take full control of your theme design from header to footer. Ultra is a “must-have” theme for designers and developers for their clients.
Divi is a great multipurpose theme developed by Elegant Themes. It includes feature rich Divi Builder with tons of modules you can ever imagine for building your sites.
Not all Custom Post Types registered by theme or plugins may not be needed. Remove unnecessary Custom Post Types from your WordPress site without switching themes or deactivating plugins.
Keep Divi Accordion close by default. There is no need for a third-party plugin.
In this post, I am sharing my experience and experiments on how to create a child theme for any WordPress theme. This site uses Twenty Fifteen by WordPress.org as a parent theme. I needed to make a couple of modifications to make it more personal such as an Intro at the top of the home page, Social Links menu close to the site title and description. Also, check out the official handbook on WordPress Child Themes and Theme Functions.