title: How to manage the layout of React Router Component
body: <p>All:</p>
  
  <p>I am pretty new to React Router, when I follow <a href="https://medium.com/@dabit3/beginner-s-guide-to-react-router-53094349669#.nx3dsfm8r" rel="nofollow">this great tutorial</a>, there is one thing I can not find out, which is:</p>
  
  <p>How can I adjust the layout to decide which area in the window can be proper rendered, the component structure talked in that tutorial is more like logic structure for content but not too much related UI layout/style.</p>
  
  <p>Could anyone show me a simple example about how to apply style to according component to make sure they are in right place?</p>
  
  <p>Thanks</p>