「CSS3」@keyframes背景色の変更のサンプル

2021年1月31日

使用例

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>sample test</title> 
<style> 
div
{
      width:100px;
      height:100px;
      background:red;
      position:relative;
      animation:myfirst 5s;
      -webkit-animation:myfirst 5s; /* Safari and Chrome */
}

@keyframes cftfirst
{
      0%   {background:red; left:0px; top:0px;}
      25%  {background:yellow; left:200px; top:0px;}
      50%  {background:blue; left:200px; top:200px;}
      75%  {background:green; left:0px; top:200px;}
      100% {background:red; left:0px; top:0px;}
}

@-webkit-keyframes myfirst /* Safari and Chrome */
{
      0%   {background:red; left:0px; top:0px;}
      25%  {background:yellow; left:200px; top:0px;}
      50%  {background:blue; left:200px; top:200px;}
      75%  {background:green; left:0px; top:200px;}
      100% {background:red; left:0px; top:0px;}
}
</style>
</head>
<body>

<p><b>notice:</b>33333</p>

<div>4444</div>

</body>
</html>

CSS

Posted by arkgame

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