title: Increase CSS atribute on button click
body: <p>I would like to know if there is a way to increase the value of a css attribute when a button is clicked.</p>
  
  <p>For example the css would be </p>
  
  <pre><code>.Testclass{
  font-size:30px;
  }
  </code></pre>
  
  <p>is there a way to increase the number in that css attribute by 10 every time the button is click either suing js or jquery.</p>