发邮件给我,动画表单效果

<body>
		<div class = "frame">
<div id = "button_open_envelope">
				发邮件给我
			</div>
			<div class = "message">
				<form method="post" action="contact.php">
					<input type="text" name="name" id="name" placeholder=" 姓名* " required>
			
					<input type="email" name="电子邮箱" id="email" placeholder=" 电子邮箱* " required pattern="^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,6}$">
				
					<input type="text" name="phone" id="phone" placeholder=" 电话（可选）" autofocus> 
				
					<textarea name="message" id="messarea" placeholder=" 信息* " required></textarea>
			
					<input type="text" name="地址" id="address" style="display: none;">
					<input type="submit" value="发送" id="send">
				</form>
			</div>
			<div class = "bottom"></div>			
			<div class = "left"></div>
			<div class = "right"></div>
			<div class = "top"></div>
			<script src="js/script.js"></script>
		</div>
	</body>

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