React Base Fiddle (JSX)

Starting point for creating JSFiddles with React. This uses React with Addons.

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://npmcdn.com/react@latest/dist/react-with-addons.js"></script>
<script src="https://npmcdn.com/react-dom@latest/dist/react-dom.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration-babel.js"></script>
<script src="https://npmcdn.com/style-it@latest/dist/style-it-standalone.js"></script>

<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

JavaScript 1.7

class Intro extends React.Component {
      render() {
        return (
        <Style>
        {`
          #heart {
            position: relative;
            width: 100px;
            height: 90px;
          }
          #heart:before,
          #heart:after {
            position: absolute;
            content: "";
            left: 50px;
            top: 0;
            width: 50px;
            height: 80px;
            background: red;
            -moz-border-radius: 50px 50px 0 0;
            border-radius: 50px 50px 0 0;
            -webkit-transform: rotate(-45deg);
            -moz-transform: rotate(-45deg);
            -ms-transform: rotate(-45deg);
            -o-transform: rotate(-45deg);
            transform: rotate(-45deg);
            -webkit-transform-origin: 0 100%;
            -moz-transform-origin: 0 100%;
            -ms-transform-origin: 0 100%;
            -o-transform-origin: 0 100%;
            transform-origin: 0 100%;
          }
          #heart:after {
            left: 0;
            -webkit-transform: rotate(45deg);
            -moz-transform: rotate(45deg);
            -ms-transform: rotate(45deg);
            -o-transform: rotate(45deg);
            transform: rotate(45deg);
            -webkit-transform-origin: 100% 100%;
            -moz-transform-origin: 100% 100%;
            -ms-transform-origin: 100% 100%;
            -o-transform-origin: 100% 100%;
            transform-origin :100% 100%;
          }
        `}
        
          <div id="heart" />
        </Style>
        );
      }
    }
    
ReactDOM.render(
  <Intro />,
  document.getElementById('container')
);