Field group tabs have a typical tab style.
Make them look like Mantra tabs, or something similar.
Theming
Project updates
Dark mode is a popular trend, giving users a dark version of the site when their OS has a dark theme...
Create a theme setting to set the page layout width.
Config schema and default config
mantratheme...
mantratheme.info.yml
I started with a basic info file.
name: Mantra description: Mantra theme. type...
Resources
Documentation page on render arrays.
API page for hook_preprocess().
If you are overriding a library that is already overridden by a base theme, use the base theme's...