console 命令行工具 X clear

console

<!DOCTYPE html>
<html>
<body>

<form action="action_page.php">
<input type="radio" name="sex" value="male" checked>Male
<br>
<input type="radio" name="sex" value="female">Female
<br><br>
<input type="submit">
</form> 

</body>
</html>