title: How to custmize & Design the `alert()` box?
body: <p>Here is script in my <a href="http://latestpknews.tk" rel="nofollow noreferrer">website's</a> footer that will check that specific font installed or not in computer. If installed or not it will prompt alert box. I want to customize:</p>
  
  <ul>
  <li>Design of that alert box</li>
  <li>Replace the 'OK' button with 'Download' button that also have download link.</li>
  <li>Write some RTL words in new paragraph. For Example Urdu words like <code>آپ کے کمپیوٹر میں۔۔۔۔</code></li>
  </ul>