（1）火狐
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
input{
vertical-align: top;
height: 14px;
}
</style>
</head>
<body>
<div class="box">
<input type="radio" />单选框
<input type="checkbox" />复选框
</div>
</body>
</html>
