title: How can change style element on page
body: <p>If I have below style and I want to change it on click Event<br></p>
  
  <pre>
             .amet:before,
              .amet:after,
              .amet .side > div,
              .amet .corner > div {
                  position: absolute;
                  background-image: url();
              }
  </pre>
  
  <p>Some one plz suggest me. What shuld I do.</p>