How to select classes with spaces

Question

How do I select a class like class=\"boolean optional\" ?

I have tried this:

.boolean optional {CSS}

.boolean_optional {CSS}
         


        

Answer 1

Those are not classes with spaces :) They are called multiple class selectors.

You basically just need to make sure all the class names are connected (no spaces between them) and separated with a dot.

.boolean.optional {

}