CSS :focus 伪类的用法

cssweb developmentfront end technology更新于 2024/5/19 21:32:17

您可以尝试运行以下代码来实现 :focus 伪类

示例

<!DOCTYPE html>
<html>
   <head>
      <style>
         input:focus {
            background-color: orange;
         }
      </style>
   </head>
   <body>
      <form action = "">
         Subject <input type = "text" name = "subject"><br>
         Student: <input type = "text" name = "student"><br>
         Age: <input type = "number" name = "age"><br>
         <input type = "submit" value = "Submit">
      </form>
   </body>
</html>