Почтовые Формы в стиле почтовых конвертов

<div id="container">
<h1>Send a Letter</h1>

<form action="" method="post">
  <fieldset>
  <label for="name">Имя:</label>
  <input type="text" id="name" name="name" />

  <label for="email">Email:</label>
  <input type="email" id="email" name="email" />

  <label for="message">Сообщение:</label>
  <textarea id="message" name="message"></textarea>

  <input type="submit" id="send" value="Send" />

  </fieldset>
</form>
</div>

h1 {
  font-size: 30px;
  text-align: center; letter-spacing: 5px;
  margin: 0 0 44px 0;
}
#container {
  width: 560px; margin: 100px auto; padding: 51px 0 0 0;
  background: url(/images/lines.png); position: relative;
}
  #container:before {
  content: ""; width: 19px; height: 365px; position: absolute; left: -19px; top: 0;
  background: url(/images/shadow.png);  
  }

label {
  width: 150px; display: block;
  text-align: right; float: left;
  font-size: 18px; letter-spacing: 3px;
  margin: 0 10px 40px 0; clear: left;
}

input {
  width: 300px; height: 40px; float: left; margin: -14px 0 0 0;
  background: url(/images/dots.png);  
  font-family: 'Shadows Into Light', cursive;
  font-size: 24px; color: #18326d; letter-spacing: 3px;
}

textarea {
  width: 300px; height: 200px; float: left; margin: -14px 0 40px 0;
  background: url(/images/dots.png);  
  font-family: 'Shadows Into Light', cursive;
  font-size: 24px; color: #18326d; letter-spacing: 3px;
}

input#send {
  width: 202px; height: 84px; float: right;
  margin: 0 70px 36px 0; padding: 0 0 0 77px;
  background: url(/images/post-mark.png);
  font: bold 30px Helvetica, Sans-Serif; text-transform: uppercase; color: #525c73;
  cursor: pointer;
   
}