You can add a new rule (or extend an existing rule) as follows:
jss.set('code', {
color: teal;
});
You can retrieve the rules for a specific CSS selector as follows:
jss.getAll('code');
This will return an object:
{"color":"teal"}
You can also completely remove an existing rule using:
jss.remove('code');
Choose your colour:
Choose your font style: