html运行实例（css_link_focus）-搜寻教程库

代码示例：（标识：css_link_focus）

<!DOCTYPE html>
<html>
<head>
<style>
input:focus {
  background-color: yellow;
}
</style>
</head>
<body>

<form action="/index/demo/form_current.html" method="get">
  First name: <input type="text" name="fname"><br>
  Last name: <input type="text" name="lname"><br>
  <input type="submit" value="Submit">
</form>

</body>
</html>