html运行实例（css_sel_attribute

代码示例：（标识：css_sel_attribute_form）

<!DOCTYPE html>
<html>
<head>
<style>
input[type=text] {
  width: 150px;
  display: block;
  margin-bottom: 10px;
  background-color: yellow;
}

input[type=button] {
  width: 120px;
  margin-left: 35px;
  display: block;
}
</style>
</head>
<body>

<h1>添加表单样式</h1>

<form name="input" action="" method="get">
  Firstname:<input type="text" name="Name" value="Bill" size="20">
  Lastname:<input type="text" name="Name" value="Gates" size="20">
  <input type="button" value="Example Button">
</form>

</body>
</html>