react-webpack-flux-babel-natliu/src/index.css

react 全栈

* {
    margin: 0;
    padding: 0;
}

body>div:first-child {
    width: 200px;
    height: 50px;
    margin: 0 auto;
    background-color: cornflowerblue;
}

div.app {
    text-align: center;
}