Explanation
To make texts blink using CSS, specify blink for text-decoration property. Note that if some browsers could support the blink tag, they will do it but this tag is supported only by some browses like Firefox and etc..
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=shift_jis">
<title>Sample</title>
<style type="text/css"><!--
.importText {
text-decoration:blink;
}
--></style>
</head>
<body>
<h1>Sample</h1>
<p>
You can make texts <span class="importText">blink</span>.
</p>
</body>
</html>