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

I appreciate this was a while ago, but in case anyone's interested, something I've found handy also is, how to target/select an element within an element which has both classes... EXAMPLE

.boolean.optional > p {
    color: red;
}

Perhaps requires no explanation, but: turns 'paragraph text red' ONLY for paragraph's inside of elements where both classes exist i.e.both .boolean AND .optional