Move like in the link

i am trying to move button like this in the link http://www.gamesforthebrain.com/game/twincol/ but i cant move it. here is what i have done.

<div id="box" style='width:200px;height:200px;border:1px solid black;'/>

    <button id="one" type="button" >Button1</button>
    <button id="two" type="button" >Button2</button>
<button id="three" type="button">Button3</button>

<style>

button{
-webkit-appearance:none;width:40px;height:40px;padding: 0;text-align: center;vertical-align: middle;border: 1px solid red;font-size:10px;font-weight:bold;
}

#one, #two, #three
{
position:relative;

}
#one
{
-webkit-animation:levelseven 16s  infinite;
    -webkit-animation-direction:alternate;




}

#two
{

animation-direction:alternate;

/* Safari and Chrome */
-webkit-animation:levelseven_1 8s  infinite;

}

#three
{

animation-direction:alternate;

/* Safari and Chrome */
-webkit-animation:levelseven_2 10s  infinite;

}


@-webkit-keyframes levelseven /* Safari and Chrome */
{
0%   { left:0px; top:0px;}
25%  { left:200px; top:0px;}
50%  { left:100px; top:200px;}
75%  { left:150px; top:50px;}
100% {background:cyan; left:0px; top:0px;}
}

@-webkit-keyframes levelseven_1 /* Safari and Chrome */
{
0%   { left:0px; top:0px;}
50%  {background:darkgoldenrod; left:0px; top:200px;}
100% { left:0px; top:0px;}
  }


@-webkit-keyframes levelseven_2 /* Safari and Chrome */
{
0%   { left:0px; top:0px;}
50%  {left:200px; top:0px;}
100% {left:0px; top:0px;}
}

</style>

Code (markup):

 

Hello there,

You code, work, but you will need to add the Javascript : Dynamic.js that you can find on the exemple's website.

Goodluck