<!DOCTYPE html>
<html lang="pt-br">
<head>
<title>Form de exemplo com checkboxes</title>
<meta charset="utf-8">
</head>
<body>
<form action="form-action.php" method="post">
<p>
<input type="checkbox" name="bike" value="on">I have a bike
</p>
<p>
<input type="checkbox" name="car" value="on">I have a car
</p>
<p>
<input type="submit" value="Submit me!" />
</p>
</form>
</body>
</html>