title: Flat design captcha code or name of it
body: <p>There are styles of captcha but there is a flat design captcha </p>
  
  <p>Please open <a href="http://sh.st/hOG5K" rel="nofollow">this link</a></p>
  
  <p>After opening it will ask you to prove that you are not robot and there will appear a box. 
  I want to know that whats is the name of that captcha or whats is the html or javascript code for it.
  Please also answer with a simple code for it which i can add into my html.</p>