论细心的重要之处

<form  action="../login" id="login_from" method="post">
         账号:<input type="text" name="username"><br><br>
         密码:<input type="password" name="password"><br><br>
         <input type="submit" >
     </form>

<from  action="../login" id="login_from" method="post">
         账号:<input type="text" name="username"><br><br>
         密码:<input type="password" name="password"><br><br>
         <input type="submit" >
     </from>

论细心的重要之处，一字之差我的三天两夜没了，困了，睡觉