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<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>CSS3 Form 提示</title>
<style type="text/css" media="screen">
form {
margin: 20px 0 18px;
}
fieldset {
padding: 0;
margin: 0;
border: 0;
label,
CSS代码...
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JS代码...