html运行实例（css3_box-sizing_all）-搜寻教程库

代码示例：（标识：css3_box-sizing_all）

<!DOCTYPE html>
<html>
<head>
<style>
body {
  margin: 0;
}

* {
  box-sizing: border-box;
} 

input, textarea {
  width: 100%;
}
</style>
</head>
<body>

<form action="/index/demo/form_current.html">
  First name:<br>
  <input type="text" name="firstname" value="Mickey"><br>
  Last name:<br>
  <input type="text" name="lastname" value="Mouse"><br>
  Comments:<br>
  <textarea name="message" rows="5" cols="30">