Customizing bootstrap

Why is it that bootstrap classes are compiled in the css file while custom classes don’t even get compiled. Is there a n easy way to fix this issue. It really sucks. Any help please

Your classes should be included in the custom css file.

Customize bootstrap docs

Bootstrap classes are compiled because they’re part of the framework. Custom classes don’t get compiled by default. Ensure your custom classes are referenced in your HTML and included in the (mod edit link removed) compilation process, typically by adding them to your CSS file or through a build process like webpack.