How to apply styles to elements in another element (react-jss)?

Question

React

So apply styles if an element is nested within another ?

block: {
        display: 'none'
    },

    blockOpen: {
        display: 'block',

        [`& ${ title }`]: {
            color: 'red'
        }
    },

    title: {
        margin: 0,
    },