Vue's magical key mapping
Due to JS limitations (i.e., keys need to be valid JS identifiers, ie.
unambiguous barewords or quoted strings), so you can’t use “kebab case” on
the left hand side of a bind object expression; it owuld look to the
browser’s JS parser like string subtraction (hummus-peppers). So, Vue
helpfully and silently accepts camelCase keys instead, and then
evaluates them to dash-case syntax for you (ie: fontSize will become
font-size). Cool but magical.