<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
.search_form{position:relative; height:31px; margin:0 auto;display:inline-block;}
.search_form:hover{-webkit-box-shadow:0 0 3px #999;-moz-box-shadow:0 0 3px #999}
.sinput{float:left; width:500px; height:21px; line-height:21px; padding:4px 7px; color:b3b3b3; border:1px solid #999; border-radius:2px 0 0 2px; background-color:#fbfbfb;}
.sbtn{float:left; width:100px; height:31px; padding:0 12px; margin-left:-1px; border-radius:0 2px 2px 0; border:1px solid #4d90fe; background-color:#4d90fe; cursor:pointer; display:inline-block; font-size:12px; vertical-align:middle; color:#f3f7fc;position:absolute;}
.sbtn:hover{background:#4084f2}
</style>
</head>
<body>
<div>
<form action="#" method="get"> <input type="text" name="s" class="sinput" placeholder="输入 回车搜索" autofocus x-webkit-speech> <input type="submit" value="搜索" class="sbtn"> </form>
</div>
</body>
</html>