Browser compatibility depends on what Semantic UI supports, which is currently the following:
Although some components will work in IE9, grids and other flexbox components are not supported by IE9 and may not appear correctly.
Yes and it is recommended to be used instead of the main theme. Read: Using Chap child.
Yes, Chap theme predates Gutenberg editor and was originally created to be used with the classic editor. Everything you can do with blocks in the Gutenberg editor can be done by using shortcodes in the Classic editor.
Yes, Chap will work on desktop computers, tablets and mobiles.
Yes, it is possible to enable a sticky menu in this theme. It will be a copy of the main menu and will appear once the user has scrolled below the masthead.
No, the custom made shortcodes and blocks that come with Chap are able to accomplish any sort of page content design as well as provide stylistically fitting UI elements.
Chap includes intuitive shortcodes for anything you may wish to add on your pages.
Yes, you can choose your own brand colors, as well as customize 13 other basic colors used throughout Semantic UI components.
Yes, you can increase or decrease the website’s width as well as use a boxed layout.
What this theme includes to mitigate this:
The custom built shortcodes and blocks that come with Chap are able to accomplish any sort of content design as well as provide stylistically fitting UI elements.