Untitled

<!DOCTYPE html>
<html>

  <head>
    <script data-require="jquery@*" data-semver="2.1.3" src="http://code.jquery.com/jquery-2.1.3.min.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body>
    <div class="picture" id="picture">
      <img src="https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcRZAb6KcZrNTBM1UflIMAQfAGuTKN0XWYFsiTgm5M5NRwXO_udT" />
    </div>
    <button class="show_btn" onclick="show()">Show</button>
    <button class="hide_btn" onclick="hide()">Hide</button>
    
  </body>
  
  <script>
    function show(){
      $('#picture').show();
    }
    
    function hide(){
      $('#picture').hide();
    }
  </script>

</html>

// Code goes here

/* Styles go here */