javascript - How to make transition go back and forth once -


i've heard of animations/transitions occur multiple times. need transition changes width once , changes (again, on three-second interval) after two-second pause. how this?

here's code:

<html>     <head>     <meta http-equiv="content-type" content="text/html; charset=utf-8" />      <title>page 2</title>      <style type="text/css">     /* styles go here */     img {         width:200px;          height:100px;          animation-name: widthchange;          animation-duration: 3s;         -webkit-animation-name: widthchange;          -webkit-animation-duration: 3s;         -moz-animation-name: widthchange;          -moz-animation-duration: 3s;         -0-animation-name: widthchange;          -0-animation-duration: 3s;          }      p {text-align:center}     button {margin:20px}     .stylized {         font-style: italic;         border-width: 5px;         border-color: yellow;         border-style: outset;     }      @-webkit-keyframes widthchange {         {width: 200px;}         {width: 400px;}         {width: 400px;}         {width: 200px;}     }     @-o-keyframes widthchange {         {width: 200px;}         {width: 400px;}         {width: 400px;}         {width: 200px;}     }     @-moz-keyframes widthchange {         {width: 200px;}         {width: 400px;}         {width: 400px;}         {width: 200px;}     }     @keyframes widthchange {         {width: 200px;}         {width: 400px;}         {width: 400px;}         {width: 200px;}      }      </style>      <script src="http://code.jquery.com/jquery.min.js"></script>     <script type="text/javascript">     $(function(){        // jquery methods go here...        $(document).ready(function() {         $('img').addclass("loaded");         $('img').addclass("loaded2");         $("#button1").click(function() {             $("button").addclass("stylized");             $("#button1").html("fancy button 1");             $("#button2").html("fancy button 2");             $("#button3").html("fancy button 3");         });        });      });     /* additional javascript goes here */     </script>   </head>    <body>     <img class = "image" src="elephant.jpg" alt="elephant"/>     <p><button id="button1">button 1</button><button id="button2">button 2</button><button id="button3">button 3</button></p>    </body> </html> 

img {          width:200px;           height:100px;           animation: widthchange 3s 2s;          -webkit-animation: widthchange 3s 2s;          -moz-animation: widthchange 3s 2s;          -0-animation: widthchange 3s 2s;          }        p {text-align:center}      button {margin:20px}      .stylized {          font-style: italic;          border-width: 5px;          border-color: yellow;          border-style: outset;      }        @-webkit-keyframes widthchange {          0%, 100% {width: 200px;}          50% {width: 400px;}      }      @-o-keyframes widthchange {          0%, 100% {width: 200px;}          50% {width: 400px;}        }      @-moz-keyframes widthchange {          0%, 100% {width: 200px;}          50% {width: 400px;}      }      @keyframes widthchange {          0%, 100% {width: 200px;}          50% {width: 400px;}        }
<img class = "image" src="elephant.jpg" alt="elephant"/>      <p><button id="button1">button 1</button><button id="button2">button 2</button><button id="button3">button 3</button></p>

use % , animation-delay


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