title: dynamic switching of two styles.css file in one angular application
body: <p>I have to merge two angular applications into one major angular application. Hence, now i am having two styles.css files in one angular application. On running this application after merging both, css is going completely for the angular application.</p>
  
  <p>Is there any way by which we can call this two style.css files dynamically depending on the requirement? Or I need to check each class one by one?</p>