//CSS
#tus{margin:5px;padding:0;width:640px;height:auto;}
#tus ul{margin:0px;padding:0;height:auto;width:640px;}
#tus li{margin:0px;padding:0;list-style-type:none;float: left;}

<div is="tus" class="">
  <ul class="">
    <li><input value="1" type="button" id="button"onclick="sanal_klavye('1','','','','');"></li>
  </ul>
</div>