conditional styling css

1class App extends Component {
2  constructor() {
3    super()
4    this.state = { isRed: true }
5  }
6
7  render() {
8    const isRed = this.state.isRed
9
10    return <p style={{ color: isRed ? 'red' : 'blue' }}>Example Text</p>
11  }
12}

1Not in the traditional sense, but you can use classes for this, if you have access to the HTML. Consider this:
2
3<p class="normal">Text</p>
4
5<p class="active">Text</p>
6and in your CSS file:
7
8p.normal {
9  background-position : 150px 8px;
10}
11p.active {
12  background-position : 4px 8px;
13}
14That's the CSS way to do it.